Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Hugo Jachmann"'
Autor:
Alex Kipo, Cletus Balangtaa, Hugo Jachmann, Cletus Nateg, Fuseini Damma, Edward Debrah, Julian Blanc, Eric Atta-Kusi
Publikováno v:
South African Journal of Wildlife Research. 41:95-109
Performance and adaptive management systems were introduced in all protected areas in Ghana to stop the decline in wildlife and the further loss of biodiversity. The competitive management system resulted in an increase in the relative abundance of w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc2542d7605ef4351377f20c7d72b320
https://doi.org/10.3957/056.041.0112
https://doi.org/10.3957/056.041.0112
Autor:
Hugo Jachmann
Publikováno v:
Biological Conservation. 141:1906-1918
Starting in 2004, a system to monitor patrol staff performance, illegal wildlife use and trends in large-mammal populations was established in nine protected areas in Ghana. The main objectives were to use monitoring feedback as the foundation for in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2541a807d65a28ff54368a00d67927c8
https://doi.org/10.1016/j.biocon.2008.05.009
https://doi.org/10.1016/j.biocon.2008.05.009
Autor:
Hugo Jachmann
Publikováno v:
Biological Conservation. 141:89-99
In Ghana, budgetary allocations for protected area management have been consistently low. To improve cost-effectiveness and performance of law enforcement, monitoring feedback was used to provide the foundation for informed management decisions. Betw
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::956fa3f72c26a35273ed75457e03b2be
https://doi.org/10.1016/j.biocon.2007.09.012
https://doi.org/10.1016/j.biocon.2007.09.012
Autor:
Hugo Jachmann
Publikováno v:
Journal of Applied Ecology. 39:841-852
Summary 1. Over the past 50 years, aerial counts have been widely used in African wildlife management; however, the accuracy of the resulting estimates has rarely been questioned. The reliability of aerial counts of large African herbivores was exami
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b85f814a122aa0f4a454307225274c40
https://doi.org/10.1046/j.1365-2664.2002.00752.x
https://doi.org/10.1046/j.1365-2664.2002.00752.x
Autor:
Hugo Jachmann
Estimating abundance of wildlife is an essential component of a wildlife research program, and a prerequisite for sound management. With the exception of a few highly mathematical volumes, there are no books on the subject for use by students and fie
Autor:
Hugo Jachmann
Publikováno v:
African Journal of Ecology. 29:188-195
Summary Aerial sample survey, foot survey, vehicle survey, dry-season droppings count and wet-season droppings count were used for estimating elephant (Loxodonta africana africana) densities on the Nazinga Game Ranch, Burkina Faso and evaluated again
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48842ce0400aba52efe471aac1d54697
https://doi.org/10.1111/j.1365-2028.1991.tb01001.x
https://doi.org/10.1111/j.1365-2028.1991.tb01001.x
Autor:
Hugo Jachmann, Tamara Croes
Publikováno v:
Environmental Conservation. 18:168-171
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2ca06b8617ec577284031f94bbb6bcdc
https://doi.org/10.1017/s0376892900021767
https://doi.org/10.1017/s0376892900021767
Autor:
Hugo Jachmann
Publikováno v:
Estimating Abundance of African Wildlife ISBN: 9781461355250
The technique and the field procedures relating to aerial total counts were first summarised by Norton-Griffiths (1975). Although the concept is simple, the design of an aerial census requires careful consideration to minimise error and bias. The mai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::841cf0e2dbfe11ceab5f492820149ac5
https://doi.org/10.1007/978-1-4615-1381-0_5
https://doi.org/10.1007/978-1-4615-1381-0_5
Autor:
Hugo Jachmann
Publikováno v:
Estimating Abundance of African Wildlife ISBN: 9781461355250
Estimating animal abundance is central to sound management and is an important part of most wildlife research programs. Counting animals is a challenging task that will take you to many fascinating places that you would not otherwise see. I myself ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3cd683817ebdfe5c7328576803879298
https://doi.org/10.1007/978-1-4615-1381-0_1
https://doi.org/10.1007/978-1-4615-1381-0_1
Autor:
Hugo Jachmann
Publikováno v:
Estimating Abundance of African Wildlife ISBN: 9781461355250
This subject was briefly introduced in the first chapter (see section 1.2), but now needs to be expanded to relate the different techniques for estimating animal abundance to conditions commonly found in practice.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fed785de686232ba4d7a7661c58335eb
https://doi.org/10.1007/978-1-4615-1381-0_12
https://doi.org/10.1007/978-1-4615-1381-0_12