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Giraffa camelopardalis ssp. reticulata, Reticulated Giraffe THE IUCN RED LIST OF THREATENED SPECIES™

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  • Giraffe Conservation Foundation
  • altinbas

Abstract

The IUCN Red List of Threatened Species Assessment of the Reticulated Giraffe.
The IUCN Red List of Threatened Species™
ISSN 2307-8235 (online)
IUCN 2008: T88420717A88420720
Scope: Global
Language: English
Giraffa camelopardalis ssp. reticulata, Reticulated Giraffe
Assessment by: Muneza, A., Doherty, J.B., Hussein Ali, A., Fennessy, J., Marais,
A., O'Connor, D. & Wube, T.
View on www.iucnredlist.org
Citation: Muneza, A., Doherty, J.B., Hussein Ali, A., Fennessy, J., Marais, A., O'Connor, D. & Wube, T.
2018. Giraffa camelopardalis ssp. reticulata. The IUCN Red List of Threatened Species 2018:
e.T88420717A88420720. http://dx.doi.org/10.2305/IUCN.UK.2018-
2.RLTS.T88420717A88420720.en
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THE IUCN RED LIST OF THREATENED SPECIES™
Taxonomy
Kingdom Phylum Class Order Family
Animalia Chordata Mammalia Cetartiodactyla Giraffidae
Taxon Name:ÊÊGiraffa camelopardalis ssp. reticulata De Winton, 1899
Parent Species:ÊÊSee Giraffa camelopardalis
Common Name(s):
• English: Reticulated Giraffe
Taxonomic Notes:
Whilst Reticulated Giraffe Giraffa reticulata de Winton 1899 is currently recognized by IUCN as a distinct
subspecies of Giraffa camelopardalis, some authorities have suggested that Reticulated Giraffe should
be elevated back to a species (Groves and Grubb 2011, Fennessy et al. 2016). Phylogenetic and
taxonomic studies are ongoing.
Assessment Information
Red List Category & Criteria: Endangered A2acd ver 3.1
Year Published: 2018
Date Assessed: March 16, 2018
Justification:
Reticulated Giraffe is listed as Endangered under criterion A because of an estimated continuing of ~56%
over the last 30 years (3 generations). The decline is most likely attributed to habitat loss, deterioration
in habitat quality and illegal killing/poaching.
Reticulated Giraffe are are found only in the north and east of Kenya and likely persist in southern
Ethiopia and in south-western Somalia. The numbers remaining in Ethiopia and Somalia are unknown
but suspected to be small: most of the current population is believed to occur in Kenya. Based on
available aerial survey data the population of Reticulated Giraffe in Kenya in (1983-1987), was estimated
at 36,000. Most recent estimates (2011-2017) based on aerial survey data estimate the population at
15,784 individuals (11,048 mature individuals).
Geographic Range
Range Description:
Reticulated Giraffe historically occurred from southern Somalia and southern Ethiopia into northern
Kenya. In Somalia, Reticulated Giraffe ranged from the south-western border as far as the Jubba River
but their numbers were in decline long before the collapse of the State in 1991 (East 1999). Very little
information on the status of Reticulated Giraffe has emerged from the country since then and it is likely
that the subspecies occurs only in low numbers and/or as a vagrant (A.H. Ali pers. comm.).
In Ethiopia, Reticulated Giraffe were once widespread south of the central plateau, east of the Omo
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
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River (Yalden et al. 1984), and as far east as the Ogaden (Dagg 1962). Their numbers have declined
dramatically since the 1960s but a relict population likely still exists in the Borana and Ogaden regions,
bordering Kenya and Somalia to the south and east respectively (Marais et al. 2013).
The former range in Kenya is bounded in the west by the Rift Valley and in the south-east by the Tana
River, and encompasses most of the area north and east of Mount Kenya as far as the borders with
Ethiopia and Somalia (East 1999). The population of Reticulated Giraffe in Kenya is much reduced
(Marais et al. 2013) but it is still found in substantial parts of their former range including the northern
rangelands (KWS 2013).
Country Occurrence:
Native: Ethiopia; Kenya; Somalia
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
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Population
Reticulated Giraffe numbers in conservation areas was estimated to be greater than 27,110 and there
were none in private land (East 1999). It is important to note though that these data do not include any
estimate for Somalia. Therefore, East (1999) estimated a minimum total population of Reticulated
Giraffe, excluding Somalia, at greater than 27,680 (East 1999, Table 2 in the Appendix). Muller et al.
(2016) estimated a minimum of 36,000 Reticulated Giraffe approximately 30 years ago, using a
combination of historical surveys and estimates.
There is limited data on the historical and current Reticulated Giraffe populations in Somalia. Giraffe
north of Jubba River were assumed to be quite rare and in 1966 the population was thought to be
locally almost extinct (Funaioli and Simonetta 1966). In 1968, populations in northern and central
Somalia were assumed to be extinct (Amir 2006) though Funaioli and Simonetta (1966) had estimated
more than 1,000 Giraffe remaining in the Afmedu and Bubashi Game Reserves (Table 1). In 2014, there
was anecdotal evidence of Reticulated Giraffe persistence in small numbers in the Juba region and near
the Kenyan border in Somalia. Current numbers are estimated at 100 individuals (A.H. Ali pers. comm.).
In Ethiopia, the population was estimated to be less than 100 individuals in 2013, restricted mostly in
the southwestern parts of the country (Marais et al. 2013).
In the late 1970s, Reticulated Giraffe were relatively abundant in northern Kenya, numbering
approximately ~18,200, including an estimated 11,740 giraffe in the Garissa district in northern Kenya
(Table 1). In 1977 the population in Laikipia was estimated at 6,398 (DRSRS 1977, Grunblatt et al. 1995,
Butynski 2000, Muchoki 2000, Shorrocks and Croft 2009). More recent data indicate that Kenya had an
estimated population of approximately 5,528 in 2011 (KWS 2013). However, aerial surveys conducted by
KWS and other conservation partners estimated 8,561 Reticulated Giraffe in Kenya in 2015 (Table 3). The
current population estimates for Kenya are derived from a combination of Aerial Counts conducted by
different institutions over 2011-2017 (Table 3). Garissa County is estimated to have the highest number
of Reticulated Giraffe (4,356 individuals) followed by the Laikipia-Isiolo-Samburu areas (4,006
individuals) and Lamu County (1,1974 individuals). All other populations number less than 1,000 each
and include Mandera, Marsabit, Meru and Turkana Counties (Table 3).
The total population of Reticulated Giraffe in Ethiopia, Kenya and Somalia, is estimated to be 15,785 (c.
11,048 mature individuals), a significant (56%) decline over the last 30 years.
For further information about this species, see Supplementary Material.
Current Population Trend:ÊÊDecreasing
Habitat and Ecology (see Appendix for additional information)
Reticulated Giraffe occur in north and east of Kenya and may persist in south-western Somalia and
southern Ethiopia. A study in Laikipia in northern Kenya showed that Reticulated Giraffe mostly browse
on Acacia drepanolobium, A. mellifera (44% of Giraffe forage in Laikipia), A. etbaica and Boscia
angustifolia (O’Connor et al. 2015).
Across most of their range, Reticulated Giraffe exist alongside livestock and people in northern Kenya
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
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where pastoralism is the dominant lifestyle. Thus, Reticulated Giraffe are found in most private and
community conservancies in addition to government Reserves and Parks. Northern Kenya is a xeric
landscape, which may increase the potential for long-distance movement of Giraffe in search of food.
However, few studies have been conducted to understand the spatial ecology of Giraffe in northern
Kenya. Like other Giraffe taxa, Reticulated Giraffe seem to exhibit a fission-fusion social system
(Shorrocks and Croft 2009) where they form temporary associations embedded within higher levels of
social organisation and kinship related to home range overlap, gender, and the dynamics of spatial use
(Vanderwaal et al. 2014).
Systems:ÊÊTerrestrial
Use and Trade
Hunted for meat and skins with some evidence for an increase in local trade.
Threats (see Appendix for additional information)
While further research needs to be conducted, it is currently thought that the main drivers of decline for
Reticulated Giraffe are habitat loss (including conversion to agriculture, infrastructure and urban
development, and land degradation), habitat fragmentation and poaching. Reticulated Giraffe appear to
be increasingly restricted to protected areas, including government parks and reserves, private and
community conservancies, and private ranches – the primary function of which might not be nature
conservation but livestock production. Range-wide, relatively few parks, conservancies or ranches are
enclosed, leaving a generally porous landscape for movement and gene flow between populations (with
some exceptions). Giraffe are recorded and seen on group ranches, but it is unclear the extent to which
such land can support giraffe populations given that much of these ranches are degraded. One recent
study estimated Reticulated Giraffe density on one conservancy at 9.2 Giraffe/km² vs. 2 giraffe/km² on a
group ranch (Rubenstein et al. unpublished data). Additionally, it is unclear the extent to which regions
of degraded land may act as impediments to Giraffe movements, even though there are no physical
barriers. However, rangeland loss, degradation and fragmentation are increasingly being identified as a
key threat not only to Giraffe but numerous other wildlife species in Kenya (Ogutu et al. 2016). Others
are increasingly fragmented, for example the 2010 metaling of (and subsequent ribbon development
along) the A2 Cape-to-Cairo highway, which divides Buffalo Springs and Shaba National Reserves in the
Isiolo District of Kenya, and the Isiolo-Maralal transmission line project (Tingori 2016).
Kenya’s human population has grown substantially over the last half century (World Bank 2018, Ogutu et
al. 2016, KNBS 2009, KCBS 1989). Concurrent increases in livestock (sheep, goats, camels and donkeys)
have occurred over roughly the same period (Ogutu et al. 2016). The increased human and livestock
populations has led to increased pressure on natural resources, resulting in loss of Giraffe habitat due to
harvesting of woody vegetation for charcoal, land degradation through overgrazing and climate change,
and increased coverage of a proliferating plant species (Muthiani 2001, Mizutani et al. 2003, Ogutu et al.
2016).
The region is increasingly subject to unpredictable, localised rainfall patterns and periods of drought
(sometimes extended) that can lead to devastating effects on populations of wildlife (including Giraffe)
and livestock (Williams and Funk 2011, Lyon and DeWitt 2012, Ogutu et al. 2016, Mpelasoka et al.
2018). Anecdotal evidence suggests an increase in the consumption of bush meat, despite cultural
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
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inhibitions in the case of some pastoralist societies. This may represent a significant source of additional
mortality to wild ungulate populations and is thought to be one of the drivers of decline in Reticulated
Giraffe population.
Giraffe in northern Kenya are poached using a variety of methods, predominantly wire neck snares,
poison arrows and guns. Other reported methods include spears and a ‘tree-trap’ (O’Connor et al.
unpublished data). Giraffe, which yield a very large quantity of meat for a single bullet, may be
especially attractive as a source of food to various sectors of society. There are some indications that the
trade in Giraffe meat is increasingly commercialised and being transported to urban centres (O’Connor
et al. unpublished data). Within pastoralist (Samburu and Maasai) communities, despite overwhelmingly
positive attitudes toward Giraffe, over 30% of respondents have consumed Giraffe meat in the past year,
as measured through multiple sensitive questioning techniques, and ~49% (30%-70%) across the sample
reported Giraffe meat or parts as a benefit received from Giraffe (Ruppert et al. unpublished data).
Oromo pastoralists prize Giraffe over all other trophy animals (including elephant, rhino, buffalo and
lion) and acquire increased social status by killing them. Until recently, the Oromo used only containers
made from Giraffe skin to milk or water their cattle, considering other materials to bring ill luck,
including the loss of livestock. Traditionally, they use hair from Giraffes' tails to stitch new or torn leather
garments, to decorate woven milk containers, and as baanaas, prestigious necklaces worn by men
during important ceremonies (J. Doherty pers. obs.).
Conservation Actions (see Appendix for additional information)
The profile of Reticulated Giraffe conservation has increased in recent years and various institutions
have initiated programs to stop the decline of Reticulated Giraffe populations and raise awareness. For
instance, the Northern Rangelands Trust works closely with communities to conserve wildlife and their
habitats and collecting data on Reticulated Giraffe numbers along the way. The Hirola Conservation
Programme monitors Giraffe population trends and mortalities in eastern Kenya, while San Diego Zoo
Global, in collaboration with Kenya Wildlife Service, Northern Rangelands Trust, Loisaba Conservancy,
Lewa Conservancy, The Nature Conservancy, and the Giraffe Conservation Foundation established the
Twiga Walinzi team, comprised of locals, who monitor Giraffe populations, human dimensions,
community engagement and education in Loisaba and Namunyak Wildlife Conservancies. The
Reticulated Giraffe Project conducts research and monitoring of giraffe and community engagement and
education in the Samburu-Buffalo Springs-Shaba Reserve complex area.
While Reticulated Giraffe are not currently listed in the Kenyan constitution as a protected species, the
Kenya Wildlife Service has taken steps towards protecting Giraffe populations in the country by
developing a draft National Giraffe Strategy and Action Plan (KWS 2010) which is set to be updated and
endorsed in 2018.
There is anecdoatl evidence for improving Reticulated Giraffe populations in some NRT community
conservancies as a result of added protection, awareness and coordinated grazing management.
Credits
Assessor(s): Muneza, A., Doherty, J.B., Hussein Ali, A., Fennessy, J., Marais, A., O'Connor, D. &
Wube, T.
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
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Reviewer(s): Mallon, D.
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
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conservation problems. Monitore Zoologico Italiano, Supplemento: 285-347.
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the Greater Horn of Africa droughts and their implications. Science of The Total Environment 610–611:
691-702.
Muchoki, C. H. K. 2000. Livestock and wildlife populations trends (1977–97) in Ewaso Nyiro Basin, Kenya.
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reticulata) and camels (Camelus dromedarius) in northern Kenya: effects of habitat structure and
possibilities for competition? African Journal of Ecology 53: 183-193.
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Reticulated Giraffe (Giraffa camelopardalis reticulata de Winston). African Journal of Ecology 47: 374-
381.
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Citation
Muneza, A., Doherty, J.B., Hussein Ali, A., Fennessy, J., Marais, A., O'Connor, D. & Wube, T. 2018. Giraffa
camelopardalis ssp. reticulata. The IUCN Red List of Threatened Species 2018: e.T88420717A88420720.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
Disclaimer
To make use of this information, please check the Terms of Use.
External Resources
For Supplementary Material, and for Images and External Links to Additional Information, please see the
Red List website.
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
8
Appendix
Habitats
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Habitat Season Suitability Major
Importance?
1. Forest -> 1.5. Forest - Subtropical/Tropical Dry - Suitable -
2. Savanna -> 2.1. Savanna - Dry - Suitable -
3. Shrubland -> 3.5. Shrubland - Subtropical/Tropical Dry - Suitable -
Threats
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Threat Timing Scope Severity Impact Score
2. Agriculture & aquaculture -> 2.1. Annual &
perennial non-timber crops -> 2.1.2. Small-holder
farming
Ongoing Majority (50-
90%)
- -
Stresses: 1. Ecosystem stresses -> 1.1. Ecosystem conversion
1. Ecosystem stresses -> 1.2. Ecosystem degradation
2. Agriculture & aquaculture -> 2.3. Livestock farming
& ranching -> 2.3.2. Small-holder grazing, ranching or
farming
Ongoing Majority (50-
90%)
- -
Stresses: 1. Ecosystem stresses -> 1.1. Ecosystem conversion
1. Ecosystem stresses -> 1.2. Ecosystem degradation
5. Biological resource use -> 5.1. Hunting & trapping
terrestrial animals -> 5.1.1. Intentional use (species is
the target)
Ongoing Majority (50-
90%)
- -
Stresses: 2. Species Stresses -> 2.1. Species mortality
Conservation Actions in Place
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Conservation Actions in Place
In-Place Research, Monitoring and Planning
Action Recovery plan: Yes
Systematic monitoring scheme: Yes
In-Place Land/Water Protection and Management
Conservation sites identified: Yes, over part of range
Occur in at least one PA: Yes
Area based regional management plan: No
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
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Conservation Actions in Place
Invasive species control or prevention: Not Applicable
In-Place Species Management
Harvest management plan: No
Successfully reintroduced or introduced beningly: No
In-Place Education
Subject to recent education and awareness programmes: Yes
Conservation Actions Needed
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Conservation Actions Needed
1. Land/water protection -> 1.1. Site/area protection
2. Land/water management -> 2.1. Site/area management
5. Law & policy -> 5.4. Compliance and enforcement -> 5.4.2. National level
6. Livelihood, economic & other incentives -> 6.1. Linked enterprises & livelihood alternatives
Research Needed
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Research Needed
1. Research -> 1.1. Taxonomy
3. Monitoring -> 3.1. Population trends
Additional Data Fields
Distribution
Lower elevation limit (m): 300
Upper elevation limit (m): 1000
Population
Number of mature individuals: 11048
Continuing decline of mature individuals: Yes
Extreme fluctuations: No
Population severely fragmented: No
Extreme fluctuations in subpopulations: No
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
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Population
All individuals in one subpopulation: No
Habitats and Ecology
Generation Length (years): 10
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
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11
The IUCN Red List of Threatened Species™
ISSN 2307-8235 (online)
IUCN 2008: T88420717A88420720
Scope: Global
Language: English
The IUCN Red List Partnership
The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species
Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership.
The IUCN Red List Partners are: Arizona State University; BirdLife International; Botanic Gardens
Conservation International; Conservation International; NatureServe; Royal Botanic Gardens, Kew;
Sapienza University of Rome; Texas A&M University; and Zoological Society of London.
THE IUCN RED LIST OF THREATENED SPECIES™
© The IUCN Red List of Threatened Species: Giraffa camelopardalis ssp. reticulata – published in 2018.
http://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T88420717A88420720.en
12
... Based on an interim consensus among the IUCN Species Survival Commission (SSC) Giraffe and Okapi Specialist Group (GOSG), this Red List assessment used the taxonomic classification outlined by Dagg (1971), in which Giraffa camelopardalis is a single species with nine subspecies. In this way, assessors developed a global conservation assessment for all giraffe, and then created separate subspecies-level assessments Bolger et al., 2019;Fennessy et al., 2018a,b;Muller et al., 2018;Muneza et al., 2018b;Wube et al., 2018). The evolutionary history of giraffe, which has challenged naturalists, zoologists, and taxonomists for hundreds of years, has also strongly influenced efforts to classify the conservation status of giraffe throughout Africa (Bercovitch, 2020;Seymour, 2012;Winter et al., 2018a,b). ...
... 2020: 15,985 giraffe; Increasing. IUCN Red List status (as a subspecies): Endangered (Muneza et al., 2018b). ...
... In the first-ever IUCN Red List assessment for giraffe in 2016, reticulated giraffe were estimated to number 8661 individuals . However, a subsequent update enumerated 15,785 reticulated giraffe (Muneza et al., 2018b). This discrepancy-and the increased current estimates-are attributed largely to the availability of more accurate data on giraffe abundance as opposed to substantial population growth. ...
Article
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The taxonomy of giraffe (Giraffa spp.) has a long and complex history, with scientists debating merits of various classification schemes. Currently, the International Union for the Conservation of Nature (IUCN) recognises giraffe as a single species (G. camelopardalis), based primarily on analyses of pelage patterns and geographic distribution carried out ~ 60 years ago. However, recent scientific findings on distribution and pelage pattern, along with detailed genomic analyses, have revealed inconsistencies with the existing classification, emphasizing the need for a reassessment. We conducted a systematic review of the taxonomic history of giraffe and evaluated the various classification schemes applied to the genus Giraffa. We describe these and summarise the distinguishing characteristics used for taxonomic assessments to lump or split different giraffe species and subspecies. Recent research aligns with taxonomic principles that support the hypothesis that there are four giraffe species, each of which is genetically distinct, with clear delineation between different monophyletic clades that are indicative of a long history of reproductive isolation in the wild. Based on genomic evidence supporting four reproductively isolated lineages that have been separated for hundreds of thousands of years, we urge the use of this designation in international treaties and the IUCN. We place the findings from our review in the context of the threats facing giraffe populations across their distributional range and highlight the need for incorporating up-to-date and more comprehensive data to inform conservation management of these threatened species.
... Based on an interim consensus among the IUCN Species Survival Commission (SSC) Giraffe and Okapi Specialist Group (GOSG), this Red List assessment used the taxonomic classification outlined by Dagg (1971), in which Giraffa camelopardalis is a single species with nine subspecies. In this way, assessors developed a global conservation assessment for all giraffe, and then created separate subspecies-level assessments Bolger et al., 2019;Fennessy et al., 2018a,b;Muller et al., 2018;Muneza et al., 2018b;Wube et al., 2018). The evolutionary history of giraffe, which has challenged naturalists, zoologists, and taxonomists for hundreds of years, has also strongly influenced efforts to classify the conservation status of giraffe throughout Africa (Bercovitch, 2020;Seymour, 2012;Winter et al., 2018a,b). ...
... 2020: 15,985 giraffe; Increasing. IUCN Red List status (as a subspecies): Endangered (Muneza et al., 2018b). ...
... In the first-ever IUCN Red List assessment for giraffe in 2016, reticulated giraffe were estimated to number 8661 individuals . However, a subsequent update enumerated 15,785 reticulated giraffe (Muneza et al., 2018b). This discrepancy-and the increased current estimates-are attributed largely to the availability of more accurate data on giraffe abundance as opposed to substantial population growth. ...
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Giraffe are iconic figures across a range of African landscapes but they are currently under considerable conservation threat. Although they are widely distributed throughout 21 different countries, continent-wide populations have declined considerably over the past several decades, highlighted by the International Union for the Conservation of Nature's (IUCN) new categorization of giraffe as a single species as “Vulnerable.” Recent genetic studies, however, propose alternative taxonomic categorizations in which giraffe are comprised of four distinct species. These proposed taxonomic classifications have considerable impact on giraffe conservation status, emphasizing the diverse challenges that giraffe face throughout Africa. Here, we describe recent studies on the taxonomic status of giraffe and examine implications for conservations status assessments. We conducted an extensive review of current giraffe abundance throughout all known populations and evaluated these updated abundance trends through the taxonomic perspective of a four species classification. We provide the most recent and comprehensive abundance estimates for wild giraffe in Africa. According to our assessment, there are approximately 117,173 giraffe in the wild. Providing the most current and accurate giraffe abundance estimates within evolving taxonomic perspectives can better guide targeted conservation efforts for these imperiled taxa.
... This research was conducted in northern Kenya as part of the Twiga Walinzi Initiativea collaborative conservation and research effort underpinned by partnerships between San Diego Zoo Global (SDZG), Giraffe Conservation Foundation (GCF), Northern Rangelands Trust The Twiga Walinzi (roughly translated to "Giraffe Guards" in Swahili) program was established in 2016 as the first community-based program to focus on reticulated giraffe conservation in Kenya. There was a conservation need to focus on reticulated giraffe, estimated to have declined close to 50% over the last three decades (Muneza et al., 2018). Any killing of reticulated giraffe is illegal in Kenya, and the Kenya Wildlife Service works with national law enforcement to apprehend and prosecute citizens involved with giraffe poaching. ...
... Reticulated giraffe (Giraffa reticulata) are listed as Endangered on the IUCN Red List, recently moved from the Vulnerable category after assessments had estimated population declines to be more than 50% over the last three decades (Muneza et al., 2018). This rate of decline is consistent with giraffe populations across sub-Saharan Africa, with observed declines of combined populations to be about 40% over the same time period (Muller et al., 2018). ...
... Though southern giraffe (Giraffa giraffa) populations are mostly stable or increasing, there have been overall declines of giraffe in East Africa. This includes an approximate 50% decrease in populations of both reticulated giraffe (Giraffa reticulata)(Muneza et al., 2018) and Masai giraffe (Giraffa tipppelskirchi). Primary reasons for giraffe population declines include loss of habitat from degradation, development, and land conversion, as well as overexploitation from illegal hunting (hereby referred to as poaching)(Muller et al., 2018).Though poaching has been identified as a key threat, the use and trade of giraffe parts and products are not well understood. ...
Article
Giraffe (Giraffe spp.) are iconic wildlife species to Africa, yet relatively little conservation funding and research have been directed at protection of giraffe in the wild. A growing number of national governments and conservation organizations are implementing management strategies to address the threats that giraffe face. To inform these plans, there is a need for social science that examines the human pressures associated with decline of giraffe populations, including poaching and the use of giraffe parts. As the large majority of reticulated giraffe (Giraffa reticulata) range occurs outside formally protected areas, conservation plans must be made with pastoralist communities and other actors in northern Kenya where the land is shared between people, their livestock, and wildlife. The research presented in this dissertation was conducted as part of a community-based program focused on reticulated giraffe, called the Twiga Walinzi Initiative (“Giraffe Guards” in Swahili), and represents the first quantitative study on the human dimensions of giraffe conservation. Goals of the research project were to examine key cognitions to human-giraffe interactions (i.e. attitudes, beliefs, perceptions), assess relationships between certain cognitions within areas that adopt a community-based conservation approach, and understand the extent and drivers of giraffe meat and part usage. Face-to-face interviews were conducted at two study sites over survey periods in 2016/17 (n=579) and 2019 (n=680). Results from these studies provide insights to how pastoralist communities view and act toward local giraffe. Factors that significantly influenced support for giraffe conservation differed between study sites, suggesting that local context is important to shaping human-giraffe interactions (Chapter 2). For instance, perceived benefits had stronger influence on normative belief in communities more recently connected with wildlife-based tourism. The linkages between perceived benefits, attitudes, and behaviors were further explored by assessing the relationships between these concepts within a community-based conservation setting (Chapter 3). Findings suggest a positive association between perceived benefits and attitudes toward giraffe, but there was less evidence that perceptions of wildlife-related benefits influenced use of giraffe meat/parts. As human behavior is of central interest to conservation, we also assessed levels of giraffe meat consumption (Chapter 4) and determinants of intention to consume giraffe meat (Chapter 5). Specialized questioning techniques were utilized to estimate prevalence of giraffe meat consumption preceding the two surveys. Estimated prevalence of giraffe meat consumption declined after establishment of the Twiga Walinzi. Perceived behavioral control had stronger relative influence than attitudes and subjective norms on future intention to consume giraffe meat. Collectively, these research findings are relevant for applied giraffe conservation efforts and provide a framework for understanding human-giraffe interactions and associated threats in diverse global settings.
... Though southern giraffe (Giraffa giraffa) populations are mostly stable or increasing , there have been overall declines of giraffe in East Africa. This includes an approximate 50 % decrease in populations of both reticulated giraffe (Giraffa reticulata) (Muneza et al., 2018) and Masai giraffe (Giraffa tipppelskirchi) (Bolger et al., 2019). Primary reasons for giraffe population declines include loss of habitat from degradation, development, and land conversion, as well as overexploitation from illegal hunting (hereby referred to as poaching) (Muller et al., 2018). ...
Article
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Biodiversity conservation depends on influencing human behaviors, but when activities are illegal or otherwise sensitive, e.g. because the behavior in question is taboo to a particular society, actors can be hesitant to admit engagement with illicit behaviors. We applied Specialized Questioning Techniques (SQT) to estimate and compare the behavioral prevalence of giraffe meat consumption from 2017 to 2019 in northern Kenya, Laikipia and Samburu County, between direct questioning and two SQTs: Randomized Response Technique (RRT) and Unmatched Count Technique (UCT). Comparisons between the two samples (2017 and 2019) yielded significant differences across all three methods, with confidence intervals distinctly divergent between years. The significant disparity between the two samples for all three methods suggests that there was a true reduction in giraffe meat usage in our study area, from 2017 to 2019. A key change in the study area between the two time periods was the introduction of a community-based program for giraffe conservation. Primary program activities, including ecological monitoring, community outreach and education, and collaboration with wildlife security teams, align with other conservation programs that have demonstrated reduced poaching pressures. This study demonstrates an application of SQTs to detect a decline of giraffe meat consumption, providing an alternative to self-reported data for monitoring sensitive behaviors related to direct exploitation and illegal uses of wildlife.
... Though southern giraffe (Giraffa giraffa) populations are mostly stable or increasing , there have been overall declines of giraffe in East Africa. This includes an approximate 50% decrease in populations of both reticulated giraffe (Giraffa reticulata) (Muneza et al., 2018) and Masai giraffe (Giraffa tipppelskirchi) (Bolger et al., 2019). Primary reasons for giraffe population declines include loss of habitat from degradation, development, and land conversion, as well as overexploitation from illegal hunting (hereby referred to as poaching) (Muller et al., 2018). ...
Preprint
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Biodiversity conservation depends on influencing human behaviors, but when activities are illegal or otherwise sensitive, actors can be hesitant to admit engagement with illicit behaviors. We applied Specialized Questioning Techniques (SQT) to estimate and compare behavioral prevalence of giraffe meat consumption between direct questioning and two SQTs, Randomized Response Technique (RRT) and Unmatched Count Technique (UCT), from 2017 to 2019. Comparisons between the two samples yielded significant differences across all three methods, with confidence intervals distinctly divergent between years. The significant disparity between the two samples for all three methods suggests that there was a true reduction in giraffe meat usage from 2017 to 2019. A key change in the study area between the two time periods was the introduction of a community-based program for giraffe conservation. Primary program activities, including ecological monitoring, community outreach and education, and collaboration with wildlife security teams, align with other conservation programs that have demonstrated reduced poaching pressures. This study demonstrates an application of SQTs to detect a decline of giraffe meat consumption, providing an alternative to self-reported data for monitoring sensitive behaviors related to direct exploitation and illegal uses of wildlife.
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GPS collars have revolutionized the field of animal ecology, providing detailed information on animal movement and the habitats necessary for species survival. GPS collars also have the potential to cause adverse effects ranging from mild irritation to severe tissue damage, reduced fitness, and death. The impact of GPS collars on the behavior, stress, or activity, however, have rarely been tested on study species prior to release. The objective of our study was to provide a comprehensive assessment of the short-term effects of GPS collars fitted on scimitar-horned oryx (Oryx dammah), an extinct-in-the-wild antelope once widely distributed across Sahelian grasslands in North Africa. We conducted behavioral observations, assessed fecal glucocorticoid metabolites (FGM), and evaluated high-resolution data from tri-axial accelerometers. Using a series of non-standard regression models, we illustrate clear but short-term effects to animals fitted with GPS collars. Behavioral observations highlighted a significant increase in the amount of headshaking from pre-treatment levels, returning below baseline levels during the post-treatment period (>3 days post-collaring). Similarly, FGM concentrations (i.e., stress hormones) increased after GPS collars were fitted on animals but returned to pre-collaring levels within 5 days of collaring. Lastly, tri-axial accelerometers, collecting data at eight positions per second, indicated a > 480 percent increase in the amount of hourly headshaking immediately after collaring. This post-collaring increase in headshaking was estimated to decline in magnitude within 4 hours after GPS collar fitting. These effects constitute a handling and/or habituation response (model dependent), with animals showing short-term responses in activity, behavior, and stress that dissipated within several hours to several days of being fitted with GPS collars. Importantly, none of our analyses indicated any long-term effects that would have more pressing animal welfare concerns.
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There is growing evidence of escalating wildlife losses worldwide. Extreme wildlife losses have recently been documented for large parts of Africa, including western, Central and Eastern Africa. Here, we report extreme declines in wildlife and contemporaneous increase in livestock numbers in Kenya rangelands between 1977 and 2016. Our analysis uses systematic aerial monitoring survey data collected in rangelands that collectively cover 88% of Kenya's land surface. Our results show that wildlife numbers declined on average by 68% between 1977 and 2016. The magnitude of decline varied among species but was most extreme (72-88%) and now severely threatens the population viability and persistence of warthog, lesser kudu, Thomson's gazelle, eland, oryx, topi, hartebeest, impala, Grevy's zebra and waterbuck in Kenya's rangelands. The declines were widespread and occurred in most of the 21 rangeland counties. Likewise to wildlife, cattle numbers decreased (25.2%) but numbers of sheep and goats (76.3%), camels (13.1%) and donkeys (6.7%) evidently increased in the same period. As a result, livestock biomass was 8.1 times greater than that of wildlife in 2011-2013 compared to 3.5 times in 1977-1980. Most of Kenya's wildlife (ca. 30%) occurred in Narok County alone. The proportion of the total "national" wildlife population found in each county increased between 1977 and 2016 substantially only in Taita Taveta and Laikipia but marginally in Garissa and Wajir counties, largely reflecting greater wildlife losses elsewhere. The declines raise very grave concerns about the future of wildlife, the effectiveness of wildlife conservation policies, strategies and practices in Kenya. Causes of the wildlife declines include exponential human population growth, increasing livestock numbers, declining rainfall and a striking rise in temperatures but the fundamental cause seems to be policy, institutional and market failures. Accordingly, we thoroughly evaluate wildlife conservation policy in Kenya. We suggest policy, institutional and management interventions likely to succeed in reducing the declines and restoring rangeland health, most notably through strengthening and investing in community and private wildlife conservancies in the rangelands.
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The foraging ecologies of reticulated giraffe (Giraffa camelopardalis reticulata) and domestic camels (Camelus dromedarius) were examined in the Laikipia District of Kenya, where these species have recently become sympatric. Camels increased popularity in the region has lead to concerns about their environmental impacts and possible competition with wild giraffe for resources. We gathered foraging data on both species using 2‐min group scans that recorded feeding heights and plant food preferences. Transects sampled the vegetation in areas where foraging observations were recorded. Giraffe females feed at lower elevations than males, while female camels feed below both sexes of giraffe. There was very little observed overlap in food preferences between the species. However, habitat type has an effect on foraging ecologies of both giraffe sexes, but habitat did not influence camel foraging. Camel herder husbandry techniques also influence camel foraging dynamics. These findings have important implications in achieving the twin objectives of wildlife conservation and pastoralist livestock production in northern Kenya.
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It is increasingly recognized that association patterns of most gregarious animals are nonrandom. However, nonrandom patterns can emerge in any population that exhibits spatial structure, even if individuals associate randomly. In species that lack clearly differentiated social relationships characteristic of socially complex mammals, space use patterns must be considered alongside association patterns in order to establish whether nonrandom association patterns are determined by underlying social structure or are merely an artifact of spatial structure. In this study, we simultaneously consider space use and association patterns for a wild population of reticulated giraffe. We examined whether the giraffe’s flexible fission–fusion association patterns were embedded in higher levels of social organization. We identified multilevel social organization in which individuals were members of social cliques. Cliques were embedded in larger subcommunities, which in turn were embedded in communities. The frequency with which 2 individuals were observed together was positively correlated with the extent to which their home range overlapped, implying an underlying role of shared space use in determining association patterns. However, membership in cliques and subcommunities was relatively unrelated to space use patterns for males. For females, space use played a much larger role in determining multitiered social organization, which is consistent with a matrilineal-based society characterized by female philopatry. Although giraffe social interactions are highly fluid in nature, it is apparent that association patterns in giraffe are not the result of random fission–fusion events but are embedded within a structured social network characterized by multiple levels of organization.
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Observations and simulations link anthropogenic greenhouse and aerosol emissions with rapidly increasing Indian Ocean sea surface temperatures (SSTs). Over the past 60years, the Indian Ocean warmed two to three times faster than the central tropical Pacific, extending the tropical warm pool to the west by ~40° longitude (>4,000km). This propensity toward rapid warming in the Indian Ocean has been the dominant mode of interannual variability among SSTs throughout the tropical Indian and Pacific Oceans (55°E–140°W) since at least 1948, explaining more variance than anomalies associated with the El Niño-Southern Oscillation (ENSO). In the atmosphere, the primary mode of variability has been a corresponding trend toward greatly increased convection and precipitation over the tropical Indian Ocean. The temperature and rainfall increases in this region have produced a westward extension of the western, ascending branch of the atmospheric Walker circulation. Diabatic heating due to increased mid-tropospheric water vapor condensation elicits a westward atmospheric response that sends an easterly flow of dry air aloft toward eastern Africa. In recent decades (1980–2009), this response has suppressed convection over tropical eastern Africa, decreasing precipitation during the ‘long-rains’ season of March–June. This trend toward drought contrasts with projections of increased rainfall in eastern Africa and more ‘El Niño-like’ conditions globally by the Intergovernmental Panel on Climate Change. Increased Indian Ocean SSTs appear likely to continue to strongly modulate the Warm Pool circulation, reducing precipitation in eastern Africa, regardless of whether the projected trend in ENSO is realized. These results have important food security implications, informing agricultural development, environmental conservation, and water resource planning. KeywordsEast Africa–Indian Ocean–Precipitation–Drought–Tropical warm pool–Climate change
Article
This paper describes a method of scoring the neck pattern of reticulated giraffes as a simple code that can be searched for in an Excel spreadsheet. This enables several hundred individual giraffe to be recognized and repeatedly found within a database. Possible sources of error are described and quantified. Data on group size, dispersal within groups and social network patterns are described. The latter is facilitated using Ucinet 6.85 for Windows, a software package that helps to visualize and analyse such networks. Cet article décrit une méthode pour noter le pattern du cou des girafes réticulées comme un code simple qui peut être consulté dans un tableau Excel. Cela permet de reconnaître individuellement plusieurs centaines de girafes et de les retrouver facilement dans une base de données. Plusieurs sources d’erreurs sont décrites et quantifiées. Les données sur la taille des groupes, la dispersion entre les groupes, et les schémas de réseau social sont décrits. Ce dernier est facilité par l’utilisation d’Ucinet 6.85 pour Windows, un progiciel qui vous aide à visualiser et à analyser de tels réseaux.
Wildlife utilization for community benefit: an assessment of ecological and socioeconomic viability of community wildlife utilization
  • E N Muthiani
Muthiani, E.N. 2001. Wildlife utilization for community benefit: an assessment of ecological and socioeconomic viability of community wildlife utilization. KARIRILRI, Nairobi, Kenya.
Omo National Park report for the wet season aerial survey
  • P C Renaud
Renaud, P.C. 2006. Omo National Park report for the wet season aerial survey. African Parks Foundation.
Environmental and Social Impact Assessment for the proposed Isiolo-Maralal transmission line project
  • Tingori Consultancy
Tingori Consultancy. 2016. Environmental and Social Impact Assessment for the proposed Isiolo-Maralal transmission line project. Study Report, October 2016. Tingori Consultancy, Nairobi, Kenya.
Catalogue of the mammals of Ethiopia. 5. Artiodactyla. Monitore zoologico italiano/Italian Journal of Zoology
  • D W Yalden
  • M J Largen
  • D Kock
Yalden, D. W., Largen, M. J. and Kock, D. 1984. Catalogue of the mammals of Ethiopia. 5. Artiodactyla. Monitore zoologico italiano/Italian Journal of Zoology, N.S. Supplemento 19(4): 67-221.