Endangered species’ trait responses to environmental variability in agricultural settings
2020
Аутори:
Nikolić, TijanaArok, Maja
Radišić, Dimitrije
Mirč, Marko
Velaja, Lea
Milić, Dubravka
Ćirović, Duško
Тип документа:
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт:
Understanding the spatial and temporal effects of variable environmental conditions on demographic characteristics is important in order to stop the decline of endangered-species populations. To capture interactions between a species and its environment, in this work the demographic traits of the European ground squirrel (EGS), Spermophilus citellus, were modeled as a function of agricultural landscape structure. The habitat suitability index was determined for 20 localities within the study area based on habitat use, management and type. After mapping the habitat patch occupancy in the field, crop cover maps, the average normalized difference vegetation index (NDVI) and automated water extraction index (AWEI) were obtained from satellite images covering the period 2013-2015. This data was used to develop population-level generalized linear models (GLMs) and individual-level conditional mixed-effects models (GLMMs) in R package Ime4, focusing on the key demographic traits of the EGS. The land composition and patch carrying capacity (PCC) are the key determinants of the endangered EGS population size, while system productivity is the main factor influencing individuals’ body condition after monitoring for variations across sampling years and age classes. The proposed landscape structural models show that human activities and abiotic factors shape the demographic rates of the EGS. Thus, to conserve threatened species, an appropriate focus on the spatial adaptation strategies should be employed.
Кључне речи:
Normalized difference vegetation index (NDVI); Automated water extraction index (AWEI); Demographic traits; Spermophilus citellus; HabitatИзвор:
Archives of Biological Sciences, 2020, 72, 1, 13-21Финансирање / пројекти:
- Биосенсинг технологије и глобални систем за континуирана истраживања и интегрисано управљање екосистемима (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43002)
- Rufford Foundation
- Provincial Secretariat for Science and Technological Development (142-451-2591/2017)
DOI: 10.2298/abs190715061n
ISSN: 0354-4664
WoS: 000524505000002
Scopus: 2-s2.0-85086791593
URI
http://www.serbiosoc.org.rs/arch/index.php/abs/article/view/4485https://radar.ibiss.bg.ac.rs/handle/123456789/3654