Mariana Altrichter

Mariana Altrichter
Prescott College · Environmental Studies Master Program

PhD

About

68
Publications
35,633
Reads
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1,181
Citations
Additional affiliations
January 2011 - present
Prescott College
Position
  • Instructor
February 2005 - June 2010
University of Redlands
Position
  • Professor (Assistant)
February 2002 - November 2004
The University of Arizona
Position
  • Research Assistant

Publications

Publications (68)
Article
The white-lipped peccary (WLP; Tayassu pecari ) and the collared peccary (CP; Pecari tajacu ) are social ungulates of huge ecological and economic importance. We determined the habitat occupancy for peccaries in a rural community bordering the Calakmul Biosphere Reserve in Campeche, Mexico. Twenty-eight stratified sampling points were randomly plac...
Article
Full-text available
The Dry Chaco has one of the highest deforestation rates of the world. The chacoan peccary (Catagonus wagneri; ChP) is endemic to the forests of this region and faces a high risk of extinction. However, we lack sufficient information about this species to develop effective conservation actions. This is the first study to determine the relevance of...
Article
Full-text available
Jaguar (Panthera onca) populations are declining in Bolivia because of human activity. Understanding the attitudes and perceptions of local people toward threatened species and the factors that can influence them is crucial for their protection. This study evaluated how local people’s knowledge, attitudes, and perceptions towards jaguars in souther...
Article
Full-text available
The white lipped peccary (Tayassu pecari) and the collared peccary (Pecari tajacu) are social ungulates of huge ecological and economic importance. To estimate habitat occupancy in a community forest bordering the Calakmul Biosphere Reserve, twentyeight sampling points were settled in the study area. In each point, the presence of both peccary spec...
Preprint
Full-text available
The drivers of periodic population cycling by some animal species in northern systems remain unresolved ¹ . Mysterious disappearances of populations of the Neotropical, herdforming white-lipped peccary ( Tayassu pecari , henceforth “WLP”) have been anecdotally documented and explained as local events resulting from migratory movements or overhuntin...
Article
The collared peccary (Pecari tajacu) is distributed from southwestern USA to northern Argentina; however, in some Argentinean localities it went extinct over 50 years ago. As part of a rewilding project, two peccary groups (one captive-bred family group and one mixed group formed by not genetically related individuals) were reintroduced to the Iber...
Article
Full-text available
Field information is essential for developing conservation actions, but standard methods for surveying wildlife are often inefficient in large, remote areas. Without efficient methods, surveying is difficult or even impossible. Consequently, some of the most threatened species and regions remain un- or under-surveyed, e.g. South American Chaco. Sur...
Article
Full-text available
Throughout its range in Latin America, the jaguar Panthera onca is threatened by habitat loss and fragmentation, and by conflict as a result of coexistence with people. This Near Threatened species is a top predator, and is often illegally hunted. Understanding people's attitudes and perceptions and the factors that could influence them is crucial...
Article
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Aim Understanding how habitat loss and overhunting impact large carnivores is important for broad‐scale conservation planning. We aimed to assess how these threats interacted to affect jaguar habitat (Panthera onca) between 1985–2013 in the Gran Chaco, a deforestation hotspot. Location Gran Chaco ecoregion in Argentina, Paraguay and Bolivia. Meth...
Article
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Indigenous Wichís and mestizos Criollos inhabit a rural, biodiversity rich, area of the Argentinean Dry Chaco. Traditionally, Wichís were nomads and their relations with wildlife were shaped by animistic and shamanic beliefs. Today, Wichís live in stable communities and practice subsistence hunting, gathering and in some cases, fishing. Criollos ar...
Article
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Humans, elephants, chimpanzees, and cetaceans show concern with the death of other members of their species and respond to death in particular ways. Science considers that these species are exceptions and that other mammal species show little or no reaction to the dead bodies of individuals of their species. Collared peccaries (Pecari tajacu; Tayas...
Chapter
Full-text available
Names Genus: Pecari (Dicotyles; Tayassu) Species: Two species (Pecari angulatus and Pecari tajacu) have been proposed with a possible third (Pecari crassus) in addition Subspecies: See subspecies and distribution section below Other names: French: Pécari á collier, Pakira; German: Halsband Peccaries; Italian: Pecari dal collare; Portuguese: Caititu...
Chapter
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Introduction As outlined in other chapters of this book, the different species of pigs and peccaries show considerable ecological and morphological variation, with adaptations ranging from specializing to tropical rainforest conditions or to surviving in semi-desert conditions. The 21 species of pigs and peccaries (but see Chapter 1 in this book fo...
Chapter
Full-text available
Names Genus: Tayassu Fischer, 1814 Species: Tayassu pecari (Link, 1795) Names in other languages: French: Pécari à lèvres blanches; German: Weißbartpekari; Italian: Pecari labiato; Spanish: Pecarí de Labios Blanco; Maján, Cariblanco, Chancho de Monte; Portugeuese: Queixada Taxonomy The name Tayassu pecari was first introduced by Fischer in 1814. Th...
Chapter
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Names Genus: Catagonus Ameghino, 1904 Species: wagneri Rusconi, 1930 Names in other languages: Ayoreo: Cuichajua; French: Pécari Du Chaco; German: Chaco-Pekari; Guarani: Curé-taguá; Italian: Pècari del Chaco; Spanish: Pecarí del Chaco; Pecari chaqueño, Quimilero, Tagua, Solitario; Toba: Nokkayk Other common names: Giant Pecari Note: The Chacoan pec...
Article
Full-text available
The white-lipped peccary (Tayassu peccari) and the collared peccary (Dicotyles tajacu) are social ungulates that contribute to tropical forest maintenance, molding the composition of tree species through herbivory and seed dispersal and predation. The fruits of zapote (Manilkara zapota) and ramon (Brosimum alicastrum) trees are important items in t...
Article
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Conservation measures are more likely to succeed when they take into account the perceptions and opinions of the local people who are in con­tact with the intended targets of protection. One way to account for local perceptions is to include local people in research and monitoring. We worked in a portion of the Dry Chaco that is rich in biodiversit...
Article
Full-text available
Conservation measures are more likely to succeed when they take into account the perceptions and opinions of the local people who are in contact with the intended targets of protection. One way to account for local perceptions is to include local people in research and monitoring. We worked in a portion of the Dry Chaco that is rich in biodiversity...
Article
Full-text available
The subtropical dry forests are experiencing rapid clearing in the southamerican Great Chaco region, mainly for soybean production in Argentina. This is causing biodiversity loss and soil salinization. This forests are unique for the floristic richness and the dense forest cover in a region characterized by semiarid climatic conditions. The authors...
Article
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El pecarí del Chaco conocido localmente en Para-guay como tagua (Catagonus wagneri) es una es-pecie en peligro de extinción endémica del Chaco Americano, cuya situación se mantiene en dete-rioro como consecuencia de la pérdida y transfor-mación de su hábitat y de la caza excesiva en toda su área de distribución. Este trabajo presenta los resultados...
Article
Full-text available
The white-lipped peccary (Tayassu pecari) and the collared peccary (Pecari tajacu) are social ungulates of great ecological and economic importance. Both species represent important sources of animal protein in the diet of indigenous and rural communities in Neotropical forests, which has contributed to reducing their populations throughout their g...
Technical Report
Full-text available
The Chacoan peccary (Catagonus wagneri), an endemic species of the Gran Chaco ecoregion, is endangered of extinction due mainly to habitat loss and hunting. The only conservation plan for the species was written in 1993. Because the situation continues deteriorating, and the rate of deforestation in the region is currently among the highest in the...
Technical Report
Full-text available
The Chacoan peccary (Catagonus wagneri), an endemic species of the Gran Chaco ecoregion, is endangered of extinction due mainly to habitat loss and hunting. The only conservation plan for the species was written in 1993. Because the situation continues deteriorating, and the rate of deforestation in the region is currently among the highest in the...
Preprint
Full-text available
Es un capítulo de libro cuya cita es: Di Bitetti, M. S., De Angelo, C. D., Quiroga, V., Altrichter, M., Paviolo, A., Cuyckens, E. & Perovic, P. Estado de conservación del jaguar en la Argentina. En: pp. 447-478, El jaguar en el siglo XXI. La perspectiva continental. Rodrigo A. Medellín, Antonio J. de la Torre, Heliot Zarza, Cuauhtémoc Chávez & Gera...
Article
Full-text available
Abstract The Chacoan peccary (Catagonus wagneri), or Tagua, an endemic species living in the Chaco ecoregion, is endangered by highly increasing deforestation rates across the region, particularly in the last decade. This situation highlights the need to better understand the current distribution of the species, as well as how environmental conditi...
Article
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Different cultures have different relationships with nature, and these relationships have many dimensions which shape people's perceptions towards nature. Therefore, perceptions may vary between different cultures within the same territories. Understanding each culture's relationship with the surrounding environment is of extreme importance for the...
Article
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Group living among ungulates has evolved mainly in species living in open habitats, such as grasslands and savannas, whereas in the forest, few ungulate species form groups and these tend to be small. Therefore, the white-lipped peccary (Tayassu pecari), a Neotropical ungulate listed as Vulnerable by the IUCN, represents an almost unique social occ...
Article
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This species is considered Vulnerable under criteria A2bcde+3bcde due to an ongoing population reduction estimated to be close to 30% in the past three generations (18 years) due to habitat loss, illegal hunting, competition with livestock, and epidemics. Based on current rates of decline it is suspected that this rate of reduction will continue fo...
Article
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During 2007—2008, we counted fecal deposits (n = 266) of coyotes (Canis latrans) and lagomorphs in Joshua Tree National Park, San Bernardino and Riverside counties, California, as a measure of relative abundance along 473 (115,336 m²) transects in three habitats differing in degree of activity by humans. We recorded abundance of lagomorphs and char...
Article
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Range-wide declines of a key Neotropical ecosystem architect, the Near Threatened white-lipped peccary Tayassu pecari M a r i a n a A l t r i c h t e r , A n d r e w T a b e r , H a r a l d B e c k , R a f a e l R e y n a-H u r t a d o L e o n i d a s L i z a r r a g a , A l e x i n e K e u r o g h l i a n and E r i c W. S a n d e r s o n Abstract...
Article
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We report a range-wide status assessment of a key Neotropical ecosystem architect, the white-lipped peccary Tayassu pecari, categorized as Near Threatened on the IUCN Red List, using published information and unpublished data from 41 scientists in 15 range countries. We estimate that the white-lipped peccary has been extirpated in 21% of its histor...
Book
Full-text available
La Serie Técnica de The Nature Conservancy se basa en la información científica y la promueve con el propósito de mejorar el conocimiento en conservación, para así lograr incidir de una manera positiva en la toma de decisiones e incrementar la participación efectiva de los diferentes grupos y actores claves mediante la disponibilidad y acceso a la...
Article
Full-text available
Community-based management (CBM) has been recognized as an appropriate approach to conservation, assuming that local communities have higher stakes than the state in their natural resources and have better knowledge of local resources and, therefore, can manage them more efficiently. However, the implementation of CBM has not always been successful...
Chapter
Full-text available
The semi-arid Argentine Chaco is inhabited by mestizo people, who live on an economy of subsistence based on the use of natural resources and livestock ranching. I investigated the dietary and economic importance of wildlife for local people. Through interviews and participant observation, I found that wildlife is used primarily as food, providing...
Technical Report
Full-text available
Este informe contiene una evaluación del estado a nivel de la distribución de dos de las especies de mamíferos ecológica y económicamente más importantes del Neotrópico. El pecarí labiado (Tayassu pecari) y el tapir de tierras bajas (Tapirus terrestris) tienen áreas de distribución enormes; el primero se extiende a lo largo de hábitats tropicales y...
Article
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"During the last few decades there has been a strong tendency towards privatisation of land tenure to increase protection and sustainable use of natural resources. We assess this approach in the context of land privatisation in a dry region of the Argentine Chaco where low income peasants depend on multiple common-pool resources (CPRs) to survive a...
Article
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We determined the potential nutritional levels in 25 species of plants, and in earthworms, that constitute part of the diet of white-lipped peccary (Tayassu pecari) in Corcovado National Park, Costa Rica, from January 1998 to March 1999. The highest content of fat and energy was found in seeds of the Myristicacea family. The highest content of calc...
Article
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Nutritional values in the diet of white-lipped peccary Tayassu pecari (Artiodactyla: Tayassuidae) in Corcovado National Park, Costa Rica. We determined the potential nutritional levels in 25 species of plants, and in earthworms, that constitute part of the diet of white-lipped peccary (Tayassu pecari) in Corcovado National Park, Costa Rica, from Ja...
Conference Paper
Full-text available
This ongoing project is a key component (Action 12) of the goal of developing National Action Plans for tapir conservation and management for all range countries in the 2004-2005 TSG Plan for Action that came out of the Second International Tapir Symposium in Panama. This exercise is being jointly undertaken by the Pigs, Peccaries and Hippos Specia...
Article
Full-text available
Subsistence hunting practiced by poor rural and indigenous people in Latin America differentially affects the three species of peccaries (Artiodactyla: Tayassuidae). Sustainability of subsistence hunting of peccaries in the Argentine semi-arid Chaco, where the three species coexist, was unknown. My objectives were to determine the importance of pec...
Article
Full-text available
In the Argentine Chaco, the three species of peccaries (Artiodactyla) are likely affected by habitat destruction and hunting, yet basic information on peccary distribution and status in this region is poorly known. This study identifies human factors associated with relative abundance and distribution of each species. Estimation of relative abundan...
Article
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Las comunidades de micromamíferos en las Sierras Chicas, Córdoba, Argentina se estudiaron en cuanto a su composición, abundancia relativa, diversidad y relación con la estructura del hábitat según la cobertura vegetal, en el pastizal de altura y el bosque serrano de la Reserva La Quebrada. Se muestreó mediante cuadrículas de 30 trampas, durante tre...
Article
Full-text available
La presente investigación se desarrolló en un ambiente característico de las sierras Chicas de Córdoba, la Reserva La Quebrada. El objetivo del estudio fue describir la composición y diversidad de la comunidad herpetofaunística, sus cambios estacionales, y estudiar si existen comunidades diferentes asociadas a los ecosistemas de pastizal, bosque y...
Article
Full-text available
The Central American squirrel monkey, Saimiri oerstedii citrinellus is endemic to Costa Rica and listed by IUCN (2002) as Critically Endangered. The last optimistic estimate of the population of S. o. citrinellus was of 1,500 individuals. According to The second Squirrel Monkey Population and Habitat Viability Assessment Workshop (PHVA) took place...
Article
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Los autores reportan nuevos rangos de distribución de la especie en la costa del Pacífico de Costa Rica el año 1995.
Article
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The diurnal time budget of four herds of white–lipped peccaries (Tayassu pecari) was studied using direct observation. The study took place from July 1996 to April 1997 in Corcovado National Park, southwestern Costa Rica. We predicted that time budget would be diagnostic of peccaries’ welfare regarding food abundance. We considered that a decrease...
Article
Full-text available
The diurnal time budget of four herds of white-lipped peccaries (Tayassu pecari) was studied using direct observation. The study took place from July 1996 to April 1997 in Corcovado National Park, southwestern Costa Rica. We predicted that time budget would be diagnostic of peccaries' welfare regarding food abundance. We considered that a decrease...
Article
Full-text available
We studied fruit availability, diet and habitat use by white-lipped peccary (Tayassu pecari) in Corcovado National Park, southwest Costa Rica, from July 1996 to April 1997. The results show that the availability of important fruits for the white-lipped peccary differs between habitats and climatic seasons. Fruit availability was highest in the prim...
Article
Full-text available
White-lipped peccaries are non-seasonal breeders in South America, but little is known about their reproduction in Central America. There are few studies about the sex ratio of this species in the field. We studied the reproduction and sex ratio of white-lipped peccaries during 200 hours of field observation of four radiomarked and two unmarked her...
Article
Full-text available
The diet of the white-lipped peccari Tayassu pecari was studied from July 1996 to April 1997 in Corcovado National Park, Costa Rica, through fecal analysis and direct observations. The feces consisted of 61.6% fruits, 37.5% vegetative parts, 0.4% invertebrates and 0.5% unidentified material. These proportions are similar to those reported for white...
Article
Full-text available
The diet of the white-lipped peccari Tayassu pecari was studied from July 1996 to April 1997 in Corcovado National Park, Costa Rica, through fecal analysis and direct observations. The feces consisted of 61.6% fruits, 37.5% vegetative parts, 0.4% invertebrates and 0.5% unidentified material. These proportions are similar to those reported for white...
Article
Full-text available
The number, density and distribution of juvenile and adult American alligators (Alligator mississippiensis) were determined from 3 April to 27 May 1998 at the Welder Wildlife Refuge in San Patricio County, Texas. A total of 141 alligators were counted from all aquatic habitats representing a density of 0.62 alligators/ha. (or 162 alligators/sq, mil...
Article
Full-text available
Resumen: Estimé la importancia que la carne de mamíferos silvestres tiene en la dieta de pobladores de la Península de Osa, cercanos al Parque Nacional Corcovado. Visité 16 pueblos y la Comunidad Indígena Guaymí e hice entrevistas a un 55 % de las familias. La carne de monte se consume en quinto lugar, siendo el tepezcuintle Agouti paca el mamífero...
Article
Full-text available
The white-lipped peccary Tayassu pécari has been considered a seed predator, but few studies have demonstrated it. In Corcovado National Park, Costa Rica, white-lipped peccaries are mainly frugivorous. They feed on a great variety of fruit and seeds. We wanted to know which species of plants peccartes prey on and/or disperse in this environment. We...

Questions

Question (1)
Question
Hello conservation biology teachers & practitioners. The college where I teach undergrad conservation biology is switching from semester-long to four-week condensed classes. We are asked to champion depth over breadth. We were told to avoid packing all our previous syllabus in 4 weeks, but rather re-design the course from the start, identifying 4 or 5 main learning outcomes we want students to have at the end of the course. I have a hard time identifying the most important, currently relevant concepts students should know at the end of a 4 weeks conservation biology class (I feel everything is important!). So, I thought I would put it out in the wider community; If you had to teach only 4 or 5 main concepts in Conservation Biology, what would you do? Thanks in advance!

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