Joëlle De Weerdt

Joëlle De Weerdt
Vrije Universiteit Brussel | VUB · Biology (DBIO)

PhD Candidate

About

58
Publications
33,301
Reads
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65
Citations
Citations since 2016
28 Research Items
63 Citations
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Introduction
My research focus concerns the population dynamics and conservation of cetaceans primarily in Central America. I conduct research on a variety of marine mammals including bottlenose dolphins, humpback whales and spotted dolphins in coastal habitats.
Additional affiliations
January 2020 - present
Vrije Universiteit Brussel
Position
  • PhD Student
Description
  • Ecology of humpback whales and other cetaceans off the Pacific coast of Nicaragua
July 2019 - August 2019
Centro de Investigacion de Cetaceos Costa Rica CEIC
Position
  • Researcher
Description
  • Research on humpback whale mother-calf pair distribution according to age in Golfo Dulce
May 2018 - June 2018
Association Al Lark
Position
  • Researcher

Publications

Publications (58)
Article
Full-text available
The SPLASH project (2004–2006) revealed complex population structure and migratory connections, but no regional effort was made along the southern Mexican Pacific coast until dedicated research was initiated in 2010. It is unclear whether humpback whales documented in this region belong to the Mexican or Central American population units. This stud...
Article
Context. Previous research has shown the presence of an endangered humpback whale population breeding off the Pacific coast of Central America. However, little is known about the density, size, social-group structure and spatial habitat use of this subpopulation. Aim. The study goal was to characterise a potential breeding subpopulation of humpback...
Article
Full-text available
Documenting marine mammal strandings provides important information needed to understand the occurrence and distribution patterns of species. Here, we report on strandings of cetaceans on the Pacific ( n = 11) and Caribbean ( n = 2) coasts of Nicaragua, documented opportunistically from 2014 to 2021. Strandings included three species of baleen whal...
Article
Full-text available
Introduction: The yellow-bellied sea snake (Hydrophis platurus, formerly Pelamis platurus) is known to occur along the Pacific coast of Central America. However, there are no marine records of this species off the coast of Nicaragua. Objective: Report the first in situ marine observations of the yellow-bellied sea snake observed on three occasions...
Preprint
Full-text available
The rainforest plays a crucial role in regulating the climate balance. The biodiversity of tropical rainforests is undeniable but many aspects remain poorly known which directly influences its management. Despite the efforts of sustainable forest management, human pressure in terms of exploitation and smuggling of timber forms a problem compared to...
Article
Full-text available
We report the northernmost records to date of Southern Hemisphere humpback whales migrating from the Antarctica Peninsula to the Pacific coast of Nicaragua during the austral winter. From 2015 to 2018, data from opportunistic sightings of humpback whales were gathered during boat trips in Nicaragua, crowd-sourced through local citizen science effor...
Chapter
Full-text available
Volume N°13 de la collection « Monographies des provinces de la République démocratique du Congo ». La Flore du Nord-Ubangi
Poster
Full-text available
False Killer whales are listed as nearthreatened on IUCN red list, Lack of knowledgecon distribution and occurrence along the Pacific coast of Central America,
Poster
Full-text available
The discovery of Nicaragua as a feeding stopover for migrating humpback whales could indicate it represents a previously undocumented feeding site or that whales are seeking new feeding sites.
Poster
Full-text available
South America hosts two stocks of humpback whales (Megaptera novaeangliae), stock A occupying southwest waters of the Atlantic, and stock G, located in the Southeast Pacific. After breeding in these locations in the austral winter and spring, both stocks travel in the austral summer to the feeding areas located in the Magellan Strait, Corcovado Gul...
Chapter
Full-text available
Volume n° 12 de la collection « Monographies des provinces de la République démocratique du Congo ». La Flore du Mai-Ndambe
Presentation
Full-text available
The cetacean conservation project of Nicaragua is a science-based conservation project that aims to combine scientific research and education activities to make conservation actions effective in collaboration with decision makers.
Presentation
Full-text available
The North-East Pacific humpback whale population migrates to warm breeding grounds to give birth and reproduce. Although a lot of research effort has been put in place to understand general humpback whale migration behavior, little is known on the distribution of Mother-calf (MC) pairs in breeding grounds. The objective is to understand MC spatio-t...
Presentation
Full-text available
Coastal anthropogenic activities such as ecotourism are going to increase in the coming years and understanding habitat use patterns and underlying factors of dolphin distribution is therefore very important for their conservation. The pantropical spotted dolphins have an offshore and a coastal form and very little is known on the occurrence of the...
Chapter
Full-text available
Le Haut-Katanga s'étend aux confins sud-est de la République démocratique du Congo sur 132 425 km². C'est l'une des provinces les plus richement dotées par la nature. Et l'une des plus convoitées pour ses gisements miniers. Lubumbashi, son chef-lieu, est la deuxième ville du pays et occupe à la fois des fonctions administratives, économiques et cul...
Poster
Full-text available
Pantropical spotted dolphins (Stenella attenuata) are a widespread species in the Pacific Ocean. Recent genetic studies have confirmed that two subspecies (coastal and offshore) were identified along the Pacific coast from Mexico to Nicaragua. Studies using mark-recapture methods on pantropical spotted dolphins are scarce. This study offers a compa...
Research
Full-text available
La Jalle de Blanquefort est un cours d’eau important pour beaucoup d’acteurs qui l'utilisent, cela inclut les maraîchers, les pêcheurs, les chasseurs, les marais de la Réserve Naturelle de Bruges et les propriétaires privés. Le terme de Jalle est une dénomination locale pour un cours d'eau en région bordelaise. La Jalle de Blanquefort est toutefois...
Poster
Full-text available
This is the first study that has been conducted in the waters of Nicaragua (Central America) along the Pacific Ocean to assess the diversity and occurrence of cetaceans. Boat based surveys were carried out in San Juan del Sur (South-Western Nicaragua) and in Padre Ramos (North-Western Nicaragua) in August 2015 and January -March 2016. Boat based su...
Poster
Full-text available
Data are lacking on humpback whales (Megaptera novaeangliae) in Guerrero state, southwest Mexico (N 17° 34’ W 101° 27’), located between known Northeastern Pacific and Central American wintering/calving areas. Interactions between whales and commercial fishing and tourist vessels are increasing, but poverty and corruption in Guerrero have precluded...
Presentation
Full-text available
Knowledge regarding odontocete species occurrence and distribution off the southwestern state of Guerrero, Mexico is extremely limited. Our study goal was to describe and quantify winter occurrence and habitat-use patterns of delphinids in 300 km2 of undescribed coastal waters near Barra de Potosi (20 km south of Zihuatanejo), Guerrero. We hypothes...
Poster
Full-text available
Humpback whales in the North Pacific winter in low latitude areas off Asia, Hawai‘i, Mexico, and Central America. Most of the research off Mexico has focused on the offshore Revillagigedos and mainland Mexico from Mazatlán to Puerto Vallarta, with little work conducted off central or southern Mexico. We used photo ID to examine migratory destinatio...
Presentation
Full-text available
In the light of environmental conservation and management it is important to get insights into movement patterns of animals, especially for migrating animals such as the humpback whales. Humpback whales in the South Pacific (G stock) migrate to Costa Rica which is the most Northern part of their breeding ground according to the IWC. Humpback whales...
Chapter
Full-text available
Volume n° 8 de la collection « Monographies des provinces de la République démocratique du Congo »
Poster
Full-text available
Nous présentons ici différents aspects de l’étude des charbons de bois à travers l’exemple de l’Afrique tropicale
Conference Paper
Full-text available
This is an introduction about wood charcoal properties, collection and taxonomical identification in the framework of palaeoecological studies in Central Africa through examples of possible applications.
Poster
Full-text available
So as to document the past history of tropical forests, several palaeoenvironmental proxies have been used. For instance, charcoals from soil deposits provide a local signal of the evolution of the vegetation together with snapshots of human interactions with the environment. As charcoal analyses are rare in tropical contexts, here we aim at presen...
Chapter
Full-text available
Poster
Full-text available
The rainforest plays a crucial role in regulating the climate balance. The biodiversity of tropical rainforests is undeniable but many aspects remain poorly known which directly influences its management. Despite the efforts of sustainable forest management, human pressure in terms of exploitation and smuggling of timber forms a problem compared to...
Conference Paper
Full-text available
Les forêts du bassin du Congo constituent le deuxième massif forestier tropical du monde. En effet, la plus grande superficie forestière dudit bassin, très riche en biodiversité, se trouve en République Démocratique du Congo (RDC). Ce patrimoine forestier dispose des essences forestières de haute valeur économique (commercialement importantes) dont...
Article
Full-text available
Humpback whales (Megaptera novaeangliae) feed at high latitudes and migrate to low latitudes to breed. During the austral winter, humpback whales from the C-stock population migrate from their feeding ground in Antarctica to breeding grounds in the Indian Ocean (Rosenbaum et al., 1997). The C3 subpopulation was estimated to be 2,532 indi-viduals in...

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Projects

Projects (6)
Project
describing the song from Nicaragua
Project
We analyse the data collected at sea on the Olive Ridley Turtles by Association ELI-Scientific, to study the distribution of the species around the Pacific Coast of Nicaragua.