Effects of anthropogenic pressure on large mammal species in the Hyrcanian forest, Iran
Anthropogenic activities, such as overexploitation (poaching, logging) and farming (livestock grazing), are the most serious threats to biodiversity and ecosystem services. The effects of these drivers may be synergistic and variable across different species. Many terrestrial large-bodied mammals ex...
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ftsubgoettdiss:oai:ediss.uni-goettingen.de:11858/00-1735-0000-002E-E332-C 2023-09-05T13:18:45+02:00 Effects of anthropogenic pressure on large mammal species in the Hyrcanian forest, Iran Effects of poaching, logging and livestock grazing on large mammals Soofi, Mahmood Waltert, Matthias Dr. Balkenhol, Niko Prof. Dr. Mühlenberg, Michael Prof. Dr. Heymann, Eckhard W. Prof. Dr. 2018-01-24 http://hdl.handle.net/11858/00-1735-0000-002E-E332-C https://doi.org/10.53846/goediss-6698 https://nbn-resolving.org/urn:nbn:de:gbv:7-11858/00-1735-0000-002E-E332-C-8 eng eng http://hdl.handle.net/11858/00-1735-0000-002E-E332-C http://dx.doi.org/10.53846/goediss-6698 urn:nbn:de:gbv:7-11858/00-1735-0000-002E-E332-C-8 1011551756 http://creativecommons.org/licenses/by-nc-nd/4.0/ 570 Hyrcanian forest Large mammals Poaching livestock grazing large carnivores Protected areas Biologie (PPN619462639) doctoralThesis 2018 ftsubgoettdiss https://doi.org/10.53846/goediss-6698 2023-08-18T08:31:11Z Anthropogenic activities, such as overexploitation (poaching, logging) and farming (livestock grazing), are the most serious threats to biodiversity and ecosystem services. The effects of these drivers may be synergistic and variable across different species. Many terrestrial large-bodied mammals experience range shrinkage and face extinction risks and population declines across the world. By these activities, humans either directly (prey poaching) or indirectly (logging and livestock grazing) affect the survival rates of large mammal species. Protected areas (PAs) have been the most effective tool to preserve native species. However, the effectiveness of PAs in relation to large mammal distribution or conservation in temperate forests has rarely been assessed, particularly at a large landscape scale. In this study, I assessed the effects of threats to seven native mammal species in the Hyrcanian forest of Iran, namely the Persian Leopard (Panthera pardus saxicolor), grey wolf (Canis lupus), brown bear (Ursus acrtos), bezoar goat (Capra aegagrus), Caspian red deer (Cervus elaphus maral), roe deer (Capreolus capreolus), and wild boar (Sus scrofa). In addition, I assessed whether there are direct effects of poaching on livestock depredation by large carnivores. I used a novel approach to survey mammal species occupancy over a large landscape (18 protected and non-protected areas) and walked 1204 km distributed randomly over 93 16-km2 cells. Field surveys resulted in 2876 animal signs of the above-mentioned species over three discrete surveys. I used single-season Bayesian occupancy modeling and estimated the occupancy and detection probability rates for each target species across the study sites. The results explicitly showed that grazing had negative and significant impact on the occupancy of the very patchily distributed Persian leopard (β = -1.65, Credibility Interval CI - 2.85 to -0.65), Caspian red deer (β = -1.36, CI -2.34 to -0.45) and roe deer (β = -1.61, CI -2.96 to -0.58) while logging negatively ... Doctoral or Postdoctoral Thesis Canis lupus Georg-August-Universität Göttingen: eDiss |
institution |
Open Polar |
collection |
Georg-August-Universität Göttingen: eDiss |
op_collection_id |
ftsubgoettdiss |
language |
English |
topic |
570 Hyrcanian forest Large mammals Poaching livestock grazing large carnivores Protected areas Biologie (PPN619462639) |
spellingShingle |
570 Hyrcanian forest Large mammals Poaching livestock grazing large carnivores Protected areas Biologie (PPN619462639) Soofi, Mahmood Effects of anthropogenic pressure on large mammal species in the Hyrcanian forest, Iran |
topic_facet |
570 Hyrcanian forest Large mammals Poaching livestock grazing large carnivores Protected areas Biologie (PPN619462639) |
description |
Anthropogenic activities, such as overexploitation (poaching, logging) and farming (livestock grazing), are the most serious threats to biodiversity and ecosystem services. The effects of these drivers may be synergistic and variable across different species. Many terrestrial large-bodied mammals experience range shrinkage and face extinction risks and population declines across the world. By these activities, humans either directly (prey poaching) or indirectly (logging and livestock grazing) affect the survival rates of large mammal species. Protected areas (PAs) have been the most effective tool to preserve native species. However, the effectiveness of PAs in relation to large mammal distribution or conservation in temperate forests has rarely been assessed, particularly at a large landscape scale. In this study, I assessed the effects of threats to seven native mammal species in the Hyrcanian forest of Iran, namely the Persian Leopard (Panthera pardus saxicolor), grey wolf (Canis lupus), brown bear (Ursus acrtos), bezoar goat (Capra aegagrus), Caspian red deer (Cervus elaphus maral), roe deer (Capreolus capreolus), and wild boar (Sus scrofa). In addition, I assessed whether there are direct effects of poaching on livestock depredation by large carnivores. I used a novel approach to survey mammal species occupancy over a large landscape (18 protected and non-protected areas) and walked 1204 km distributed randomly over 93 16-km2 cells. Field surveys resulted in 2876 animal signs of the above-mentioned species over three discrete surveys. I used single-season Bayesian occupancy modeling and estimated the occupancy and detection probability rates for each target species across the study sites. The results explicitly showed that grazing had negative and significant impact on the occupancy of the very patchily distributed Persian leopard (β = -1.65, Credibility Interval CI - 2.85 to -0.65), Caspian red deer (β = -1.36, CI -2.34 to -0.45) and roe deer (β = -1.61, CI -2.96 to -0.58) while logging negatively ... |
author2 |
Waltert, Matthias Dr. Balkenhol, Niko Prof. Dr. Mühlenberg, Michael Prof. Dr. Heymann, Eckhard W. Prof. Dr. |
format |
Doctoral or Postdoctoral Thesis |
author |
Soofi, Mahmood |
author_facet |
Soofi, Mahmood |
author_sort |
Soofi, Mahmood |
title |
Effects of anthropogenic pressure on large mammal species in the Hyrcanian forest, Iran |
title_short |
Effects of anthropogenic pressure on large mammal species in the Hyrcanian forest, Iran |
title_full |
Effects of anthropogenic pressure on large mammal species in the Hyrcanian forest, Iran |
title_fullStr |
Effects of anthropogenic pressure on large mammal species in the Hyrcanian forest, Iran |
title_full_unstemmed |
Effects of anthropogenic pressure on large mammal species in the Hyrcanian forest, Iran |
title_sort |
effects of anthropogenic pressure on large mammal species in the hyrcanian forest, iran |
publishDate |
2018 |
url |
http://hdl.handle.net/11858/00-1735-0000-002E-E332-C https://doi.org/10.53846/goediss-6698 https://nbn-resolving.org/urn:nbn:de:gbv:7-11858/00-1735-0000-002E-E332-C-8 |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_relation |
http://hdl.handle.net/11858/00-1735-0000-002E-E332-C http://dx.doi.org/10.53846/goediss-6698 urn:nbn:de:gbv:7-11858/00-1735-0000-002E-E332-C-8 1011551756 |
op_rights |
http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.53846/goediss-6698 |
_version_ |
1776199628211879936 |