Skip to content
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Menu
Home
About Us
Resources
Profiles Metrics
Authors Directory
Institutions Directory
Top Authors
Top Institutions
Top Sponsors
AI Digest
Contact Us
Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Guidelines for large herbivore translocation simplified: Black rhinoceros case study
Journal of Applied Ecology, Volume 48, No. 2, Year 2011
Notification
URL copied to clipboard!
Description
1. Most hypotheses for translocation success are elaborate, hierarchical, and untested combinations of socio-ecological predictors. Empirical support for those tested is vulnerable to spurious single-predictor relationships and does not account for the hierarchy amongst predictors and non-independence amongst individuals or cohorts. Testing hypotheses as a priori multi-level models promotes stronger inference. 2. We apply a 25-year (1981-2005) data base including 89 reintroduction and 102 restocking events that released 682 black rhinoceros Diceros bicornis into 81 reserves to test 24 hypotheses for translocation success, defined as survival to 1year post-release. We made information-theoretic comparisons of hypotheses represented as hierarchical models incorporating random effects for reserve and release cohort predictors of death. 3. Mortality rates after restocking were higher than for reintroductions (13·4 cf. 7·9%, respectively) due largely to intraspecific fighting. No predictors strongly influenced reintroduction success, although cohorts consisting entirely of adult males were 8·2% of individuals but contributed 21·9% of deaths, and reserves with lowest carrying capacities (i.e. <0·1rhinokm-2) had a 16·3% mortality rate. Most models for restocking success were not supported. Only those including age class received substantial support. Age was the only predictor to strongly influence death rates. Predictors previously thought influential, like population density, reserve area and quality, and cohort size, were not supported. 4. Synthesis and applications. Simple rules succeeded where complex ecological and demographic hypotheses failed to predict survival after translocation of critically endangered black rhinoceros. Results support bold attempts by managers at translocations towards species recovery in most ways that they have historically occurred. Groups of rhinoceros of different size and composition can be successfully moved over large distances between different ecological contexts. Also, the release of cohorts into reserves that are relatively small, poorer habitat or already stocked need not be avoided so long as calves and all-male cohorts are not reintroduced, and only adults used for restocking. Our analysis demonstrates the importance of information-theoretic comparisons of a priori hierarchical models to test hypotheses for conservation management. We caution against interpreting simple correlations or regression amongst a large number of nested ecological and demographic variables. © 2011 The Authors. Journal of Applied Ecology © 2011 British Ecological Society.
Authors & Co-Authors
Linklater, W. L.
New Zealand, Wellington
Victoria University of Wellington
South Africa, Gqeberha
Nelson Mandela University
United States, San Diego
San Diego Zoo Wildlife Alliance
Adcock, Keryn
South Africa
Iucn Ssc African Rhino Specialist Group
Du Preez, Pierre
Namibia, Windhoek
Ministry of Environment and Tourism
Swaisgood, Ronald R.
United States, San Diego
San Diego Zoo Wildlife Alliance
Law, Peter Roy
United States, Monroe
Prldb Modeling
Knight, Mike H.
South Africa, Gqeberha
Nelson Mandela University
South Africa, Port Elizabeth
South Africa National Parks
Gedir, Jay Vinson
New Zealand, Wellington
Victoria University of Wellington
Kerley, Graham I.H.
South Africa, Gqeberha
Nelson Mandela University
Statistics
Citations: 8
Authors: 8
Affiliations: 7
Identifiers
Doi:
10.1111/j.1365-2664.2011.01960.x
ISSN:
00218901
e-ISSN:
13652664
Study Design
Cross Sectional Study
Cohort Study
Case Study
Study Approach
Qualitative
Participants Gender
Male