مقاله انگلیسی رایگان در مورد وفور طعمه عامل اشغال زیستگاه توسط جگوارها در جزایر رودخانه ای دشت آمازون – الزویر ۲۰۱۹

elsevier

 

مشخصات مقاله
ترجمه عنوان مقاله وفور طعمه باعث اشغال زیستگاه توسط جگوارها در جزایر رودخانه ای دشت سیلابی آمازون می شود
عنوان انگلیسی مقاله Prey abundance drives habitat occupancy by jaguars in Amazonian floodplain river islands
انتشار مقاله سال ۲۰۱۹
تعداد صفحات مقاله انگلیسی ۶ صفحه
هزینه دانلود مقاله انگلیسی رایگان میباشد.
پایگاه داده نشریه الزویر
نوع نگارش مقاله
مقاله پژوهشی (Research Article)
مقاله بیس این مقاله بیس نمیباشد
نمایه (index) Scopus – Master Journals List – JCR
نوع مقاله ISI
فرمت مقاله انگلیسی  PDF
ایمپکت فاکتور(IF)
۱٫۶۲۹ در سال ۲۰۱۹
شاخص H_index ۶۴ در سال ۲۰۲۰
شاخص SJR ۰٫۶۸۲ در سال ۲۰۱۹
شناسه ISSN ۱۱۴۶-۶۰۹X
شاخص Quartile (چارک) Q2 در سال ۲۰۱۹
مدل مفهومی ندارد
پرسشنامه ندارد
متغیر ندارد
رفرنس دارد
رشته های مرتبط محیط زیست، کشاورزی
گرایش های مرتبط زیستگاه ها و تنوع زیستی، اقتصاد منابع طبیعی و محیط زیست
نوع ارائه مقاله
ژورنال
مجله  Acta Oecologica
دانشگاه Programa de Pós-Graduação Em Ecologia, Instituto Nacional de Pesquisas da Amazônia, Manaus, Brazil
کلمات کلیدی استنباط بیزی، مدل های سلسله مراتبی، میمون زوزه کش، مدل سازی اشغال، تعامل شکار-شکارچی، Sloths
کلمات کلیدی انگلیسی Bayesian inference، Hierarchical models، Howler monkeys، Occupancy modelling، Predator-prey interaction، Sloths
شناسه دیجیتال – doi
https://doi.org/10.1016/j.actao.2019.04.004
کد محصول E14023
وضعیت ترجمه مقاله  ترجمه آماده این مقاله موجود نمیباشد. میتوانید از طریق دکمه پایین سفارش دهید.
دانلود رایگان مقاله دانلود رایگان مقاله انگلیسی
سفارش ترجمه این مقاله سفارش ترجمه این مقاله

 

فهرست مطالب مقاله:
Abstract

۱- Introduction

۲- Materials and methods

۳- Results

۴- Discussion

References

بخشی از متن مقاله:

Abstract

The jaguar (Panthera onca) is widely distributed across a broad range of habitat types, where its feeding habits and habitat use patterns vary significantly. The jaguar and its main arboreal prey – the brown-throated sloth (Bradypus variegatus) and the red howler monkey (Alouatta juara) – are widespread in the Amazonian floodplain forests of the Mamirauá Reserve. These forest-dwelling species are the most common mammal species both in the continuous forest and the forest patches surrounded by a river matrix – the fluvial islands – of the Solimões and Japurá rivers. We used sign surveys along line-transects to assess the pattern of habitat occupancy by jaguars in Amazonian floodplain forests. Specifically, we (i) tested whether habitat occupancy by jaguars differs between river islands and continuous forest; and (ii) evaluated whether and how the local abundance of sloths and howler monkeys influence the probability of site occupancy by jaguars. We built an occupancy model and used Bayesian inference to reach these goals. The proportion of sites estimated to be used by jaguars was ψ = ۰٫۷۵ (HPD95: 0.36–۱٫۰۰), and it did not differ between islands and continuous forest. The abundance of both prey species had a direct influence on jaguar’s habitat use, whereas the aquatic matrix seems to have a negligible effect on the use of islands by jaguars. We conclude that the isolation of the river islands within the aquatic matrix does not hamper jaguars to use them. We also conclude that prey search modulates jaguars’ habitat occupancy patterns with both prey species having a similar effect. This finding is compatible with the previously reported importance of sloths to the diet of jaguars in the study region despite its lower abundance than howlers. Finally, we suggest that sign surveys are an alternative method to assess the pattern of jaguar habitat occupancy in floodplain forests.

Introduction

Predation is a remarkable interspecific interaction that has long interested ecologists (Gause et al., 1936). Large carnivores are prominent top predators that prevent prey populations to overcrowd and deplete their food sources, and whose demise can initiate substantial cascading ecological effects in the food chain that compromise ecosystem structure and functioning (Ripple et al., 2014). Therefore, assessments of carnivore distribution and population size are essential for developing informed conservation actions for these species and their ecosystems. Jaguars (Panthera onca) are the largest American felids. They are widely distributed across a broad range of habitat types (Sanderson et al., 2002), where their feeding habits and habitat use patterns vary significantly (Astete et al., 2007; Morato et al., 2016). They are opportunistic predators that exploit most of their medium to large terrestrial prey species (González and Miller, 2002) according to their availability (Rabinowitz and Nottingham, 1986). The species is often range resident and move over long daily distances (2.3–۱۶٫۴ km) in highly variable home ranges (8.8–۷۱۸٫۶ km2 ; Morato et al., 2016). Jaguars’ predominant terrestriality does not preclude them from occurring in Amazonian seasonally flooded forests (herein várzea forests). This is the case at the Mamirauá Sustainable Development Reserve – a protected area of várzea forests in Central Amazon – where jaguars reach high densities probably because of high prey abundance (Ramalho, 2012).

ارسال دیدگاه

نشانی ایمیل شما منتشر نخواهد شد.