Prof. Dr. Carsten F. Dormann

Telefon: +49 761 203-3749
Telefax: +49 761 203-3751
eMail: carsten.dormann@biom.uni-freiburg.de 




Frau Eva Meier

Telefon: +49 761 203-3749 
Telefax: +49 761 203-3751 
eMail: eva.meier@biom.uni-freiburg.de 




Biometrie und Umweltsystemanalyse

Albert-Ludwigs-Universität Freiburg

Tennenbacher Straße 4 
79106 Freiburg i. Br.


Sie sind hier: Startseite Mitarbeiter / Staff Ehemalige/Alumni Dr. Ahmed A. H. Siddig

Dr. Ahmed A. H. Siddig



Dr. Ahmed A. H. Siddig

Department of Biometry and Environmental System Analysis

Tennenbacher Straße 4, 79106 Freiburg, Germany
Room 03.058

email: asiddig(a)eco.umass.edu
phone: +49 761 203-3749
fax: +49 761 203-3751


Full CV

Other current affiliations


• Assistant professor of forestry and biodiversity conservation, University of Khartoum,

• Research associate, Harvard Forest – Harvard University.

• Adjunct Assistant Professor, Dep. Environmental Conservation – UMASS Amherst.



• PhD of Environmental Conservation (2015), University of Massachusetts Amherst (USA).

• M.Sc. of Desertification Studies (2009) - University of Khartoum (Sudan).

• B.Sc. of Forestry (2006) – University of Khartoum (Sudan).

Research interests & approach


  • I am applied ecologist and conservation biologist. The key words that best describe my research focus are Population and community ecology, Amphibians, wetlands ecology, Ecological-impacts assessment, Ecological monitoring, Ecological indicators / indices, Conservation biology, North America and Sub-Saharan Africa. 
  • My research approach based on a combination of empirical field data and modeling / simulation methods. 
  • Current projects:

- Assessing adaptation potential and resilience of forest ecosystems in Sub-Saharan Africa (2015 – 2017).

- Understanding the impacts of environmental changes on pond ecosystems in British Columbia (2015 – 2016).

- Monitoring wildlife diversity and distribution using camera-traps in Dinder national park, Sudan (2015 – 2018).

- Assessing the impacts of climatic changes on forest diversity and dynamics in arid-land ecosystems (2017 – 2019).

Awards, grants and fellowships


June 2015: Germany’s DAAD’s Postdoctoral Researchers International Mobility Experience (P.R.I.M.E.) fellowship for the years 2015 - 2017. Partners: Prof. Dr Carsten Dormann and Prof. John Richardson (value 123,000.00 Euro).

April 2015: Research grant from UMASS Amherst’s dept. of environmental conservation for a pilot research project, entitled: Monitoring wildlife distribution and diversity in Dinder National Park, Sudan. Co-investigators Prof. Curtice Griffin and Prof. Todd Fuller (value $6000).

May 2014: UMass Amherst, Graduate School Dissertation Research Grant ($972.00).

April 2014: Student grant/registration scholarship, Society for Ecological Restoration (New England Chapter) and the Conway School of Landscape Design, for attendance at the conference “Designing for Success: Ecological Restoration in Times of Change”(value $100.00).

March 2014: Harvard Forest graduate student travel grant ($215.00).

January 2014: UMass Amherst ECO graduate students travel grant ($250.00).

December 2013: Fee waiver scholarship, Cary Institute for Ecosystem Studies, for the course “Fundamentals of ecosystem ecology” (value $1000.00).

August 2010: PhD Scholarship for Merit in Environmental Sciences from Islamic Development Bank (IDB); 3 years.

March 2005: Prof. Ahmed Al-Hoorey prize for the excellence in the subject of Agroforestry in the 4th year, Faculty of Forestry – University of Khartoum, Sudan (value $100.00).

September 2002: The second best student prize in the first year. Faculty of Forestry – University of Khartoum, Sudan (value $200.00).

Professional memberships


• American Association for the Advancement of Science (AAAS)

• Ecological Society of America(ESA)



1. Yagoub, Y. E, Z. Bo, J. Ding-min, and A. A. H. Siddig. in revisions. Detection of drought pattern in Sudan using the Standardized Precipitation-Evapotranspiration Index (SPEI). Journal of Arid Land. 

2. Siddig, A. A. H. In press. Pond ecosystems and environmental changes. Branchlines (issue# TBD), the University of British Columbia’s Forestry news letter.

3. Ochs, A* and A. A. H. Siddig. In revisions. Response of Red-backed Salamanders (Plethodon cinereus) to Changes in Hemlock Forest Soil Driven by Invasive Hemlock Woolly Adelgid (Adelges tsugae). Environments.

4. Siddig, A. A. H, A. M. Ellison, and B. G. Mathewson. 2016. Assessing and predicting the impacts of the decline of eastern hemlock (Tsuga canadensis) stands on the occurrence of terrestrial amphibians in New England Forest. Ecosphere 7 (11): e01574. 10.1002/ecs2.1574.

5. Siddig, A. A. H, A. M. Ellison, A. Ochs, C. Villar-Leeman and M. K. Lau. 2016. How do ecologists select and use indicator species to monitor ecological changes: Insights from 14 years of publication in Ecological Indicators. Ecological Indicators 60 (2016) 223–230. doi:10.1016/j.ecolind.2015.06.036.

6. Ellison, A. M. and A. A. H. Siddig. 2016. Monitoring Amphibians in the Declined Hemlocks at Harvard Forest 2013-2014. Harvard Forest Data Archive: HF270.

7. Siddig, A. A. H., A. M. Ellison, and S. Jackson. 2015. Calibrating abundance indices with population size estimators of red back salamanders (Plethodon cinereus) in a New England forest. PeerJ 3: e952.

8. Siddig, A. A. H. 2014. Biodiversity of Sudan: between the harsh conditions, political instability and civil wars. Biodiversity Journal. 5 (4): 545–555. http://www.biodiversityjournal.com/pdf/5(4)_545-555.pdf

8. Siddig, A. A. H. and S. M. Abdelhameed. 2013. Assessment of climate change impacts on wildlife habitats in dry lands ecosystems: the case of the Al Sabaloka natural Reserve, Sudan. In the proceeding of the international workshop on Climate Change Adaptation, 3rd to 14th March, in Khartoum and El Obeid, Sudan. Welcome to Africa Scientific Cooperation Network on Climate Change Adaptation project, funded by Germany’s Federal Ministry of Education and Research - the DAAD program for higher education institutions. 


Publications in preparation (approximate submission dates are in parenthesis):

1. Siddig, A. A. H. In prep. Why biodiversity and ecological data-deficit continues in Africa: Perspectives. Journal TBD (December 2016).

2. Siddig, A. A. H. and A. M. Ellison. In prep. Indicator Species Potential (ISP) index: A multimetrics method for assessing and quantifying the efficacy of indicator species in monitoring environmental changes. Journal TBD (December 2016).

3. Siddig, A. A. H. and A. M. Ellison. In prep. The effectiveness of terrestrial amphibians as indicator species in long-term monitoring of environmental changes in Northeastern US forests. Journal TBD (December 2016).



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