Mammals

Multi-year presence of humpback whales in the Atlantic sector of the Southern Ocean but not during El Niño
Multi-year presence of humpback whales in the Atlantic sector of the Southern Ocean but not during El Niño

Multi-year presence of humpback whales in the Atlantic sector of the Southern Ocean but not during El Niño Elena Schall, Karolin Thomisch, Olaf Boebel, Gabriele Gerlach, Sari Mangia Woods, Ahmed El-Gabbas & Ilse Van Opzeeland Communications Biology volume 4, Article number: 790 (2021) Cite this article Abstract Humpback whales are thought to undertake annual migrations between their low latitude breeding grounds and high latitude feeding grounds.

Apr 15, 2021

Dynamic species distribution models in the marine realm: predicting year-round habitat suitability of baleen whales in the Southern Ocean
Dynamic species distribution models in the marine realm: predicting year-round habitat suitability of baleen whales in the Southern Ocean

Dynamic species distribution models in the marine realm: predicting year-round habitat suitability of baleen whales in the Southern Ocean Species distribution models (SDMs) relate species information to environmental conditions to predict potential species distributions.

Apr 15, 2021

Spatial conservation prioritisation in data-poor countries: a quantitative sensitivity analysis using multiple taxa
Spatial conservation prioritisation in data-poor countries: a quantitative sensitivity analysis using multiple taxa

Spatial conservation prioritisation in data-poor countries: a quantitative sensitivity analysis using multiple taxa Running title: User decisions affect conservation planning Authors: Ahmed El-Gabbas1*, Francis Gilbert2, Carsten F. Dormann1 1 Department of Biometry and Environmental System Analysis, University of Freiburg, D-79106 Freiburg, Germany 2 School of Life Sciences, University of Nottingham, Nottingham, United Kingdom * Corresponding author – E-Mail: elgabbas@outlook.

Jun 21, 2020

Modelling habitat suitability of whales in the Southern Ocean

Detailed information on cetacean distribution is crucial to identify large-scale conservation actions and management decisions. Understanding the ecological drivers behind their spatial patterns in the Southern Ocean is complicated by whales’ mobility and the logistic restrictions in collecting data in polar environments.

Dec 8, 2019

Fin whale (Balaenoptera physalus) distribution modelling in the Nordic Seas & adjacent waters

Understanding the dynamics of cetacean distribution in ecologically vulnerable regions is essential to interpret the impact of environmental changes on species ecology and ecosystem functioning. Species distribution models (SDMs) are helpful tools that link species occurrences to environmental variables in order to predict a species’ potential distribution.

Dec 8, 2019

Wrong, but useful: regional species distribution models may not be improved by range-wide data under biased sampling
Wrong, but useful: regional species distribution models may not be improved by range-wide data under biased sampling

Wrong, but useful: regional species distribution models may not be improved by range-wide data under biased sampling Ahmed El-Gabbas Carsten F. Dormann https://doi.org/10.1002/ece3.3834 10.1002/ece3.3834 Species distribution modeling (SDM) is an essential method in ecology and conservation.

Jan 1, 2018

Reliability of species distribution modelling for wildlife conservation in developing countries
Reliability of species distribution modelling for wildlife conservation in developing countries

Main Supervisor:Prof. Carsten F. Dormann, Department of Biometry and Environmental System Analysis, University of Freiburg, Germany. Second Supervisor:Prof. Francis Gilbert, School of Life Sciences, Nottingham University, Nottingham, UK.

Jan 1, 2018

Improved species-occurrence predictions in data-poor regions: using large-scale data and bias correction with down-weighted Poisson regression and Maxent
Improved species-occurrence predictions in data-poor regions: using large-scale data and bias correction with down-weighted Poisson regression and Maxent

El-Gabbas A. & Dormann C. F.: Improved species-occurrence predictions in data-poor regions: using large-scale data and bias correction with down-weighted Poisson regression and Maxent. Ecography DOI: 10.1111/ecog.03149. Appendix 1: Supplementary figures and tables Table A1: The estimated optimum combination of Maxent’s feature classes (FC) and Regularization Multiplier (RM) for each species and bias model type.

Jan 1, 2018

Testing the accuracy of species distribution models using species records from a new field survey
Testing the accuracy of species distribution models using species records from a new field survey

Download PDF Tim Newbold, Tom Reader, Ahmed El-Gabbas, Wiebke Berg, Wael M. Shohdi, Samy Zalat, Sherif Baha El Din & Francis Gilbert 2010 Testing the accuracy of species distribution models using species records from a new field survey

Jan 1, 2010

Mammals of Egypt: atlas, Red Data listing and conservation

My contribution: Mapping, species istribution models, translation, and Red Data assessments. I also helped in the analyses and editing.

Jan 1, 2010