نتایج جستجو برای: forest birds species richness and abundance forest biodiversity every four years caliper and tape

تعداد نتایج: 17027677  

2016
Andrew Whitworth Roger Downie Rudolf von May Jaime Villacampa Ross MacLeod

The structure and underlying functions of the majority of the world’s tropical forests have been disrupted by human impacts, but the potential biodiversity and conservation value of regenerating forests is still debated. One review suggests that on average, regenerating tropical forests hold 57% (±2.6%) of primary forest species richness, raising doubt about a viable second chance to conserve b...

Journal: :Remote Sensing 2016
Vivian Renó Evlyn Novo Maria Escada

This article analyzes the process of forest fragmentation of a floodplain landscape of the Lower Amazon over a 30-year period and its implications for the biodiversity and the provision of ecosystem services to the riverine population. To this end, we created a multi-temporal forest cover map based on Landsat images, and then analyzed the fragmentation dynamics through landscape metrics. From t...

Journal: :Brazilian journal of biology = Revista brasleira de biologia 2003
A S De Luca H L Vasconcelos T V Barrett

We studied the distribution of sandflies (Diptera: Phlebotominae)--insect vectors of several diseases, including leishmaniasis--at the interface between primary forest and cattle pasture and between primary forest and secondary forest (< 15 yr old) in Southern Brazilian Amazonia. Sandflies were collected by using a combination of light traps and traps having vertebrates as baits. Strong differe...

Journal: :Global change biology 2018
Tina Harrison Jason Gibbs Rachael Winfree

Anthropogenic landscapes are associated with biodiversity loss and large shifts in species composition and traits. These changes predict the identities of winners and losers of future global change, and also reveal which environmental variables drive a taxon's response to land use change. We explored how the biodiversity of native bee species changes across forested, agricultural, and urban lan...

اسحاقی راد , جواد, متاجی, اسداله, واحدی, علی اصغر,

Soil organic carbon pool plays an important role in the global C cycle and climate change mitigation. Therefore, improving our understanding of some factors such as plant biodiversity that can affect forest soil C storage is fundamentally important for anticipating changes. This study was carried out in the mixed-beech forests of Glandrood located in Noor using a systematic network of points in...

2010
Jai Ranganathan Jagdish Krishnaswamy M. O. Anand

A critical handicap to tropical biodiversity conservation efforts in agroecosystems is the unknowns regarding the influence of landscape-scale factors on the persistence of species. To address these uncertainties, we explored two essential landscape-scale questions, within India’s biologically-rich Western Ghats, examining two nearby human-dominated landscapes that dramatically differed in thei...

2010
I. M. TURNER

1. A review of the literature shows that in nearly all cases tropical rain forest fragmentation has led to a local loss of species. Isolated fragments suffer eductions in species richness with time after excision from continuous forest, and small fragments often have fewer species recorded for the same effort of observation than large fragments orareas of continuous forest. 2. Birds have been t...

Journal: :tropical life sciences research 2023

It is well established that oil palm one of the most efficient and productive crops. However, agriculture also threats to tropical biodiversity. This study aims investigate how set-aside areas in an plantation affect bird The research area includes two set-asides areas: peat swamp forest riparian reserves sites adjacent reserved sites. A total 3,074 birds comprising 100 species from 34 families...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان 1390

during 2010-2011 a faunistic survey was carried out for collection and identification of edaphic mesostigmatic mites (acari: mesostigmata) in jiroft and suburb. mites were extracted from soil samples by berlese funnel. the mites were cleared in nesbit fluid and were mounted in hoyer medium on microscopic slides. in this study 43 spices from 26 genera and 16 families were collected and identifie...

حسینی, سید محسن, سلمان ماهینی, عبدالرسول , صیاد, احسان , غلامی, شایسته , محمدی , جهانگرد,

The spatial distribution of soil organisms is influenced by the plant cover, thus resulting in a horizontal mosaic of areas subjected to gradients of nutrient availability and microclimatic conditions.This study was conducted to investigate the spatial variability of soil macrofauna in relation to vegetation density in the riparian forest landscape of Karkhe. The vegetation density was determin...

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