نتایج جستجو برای: species inventory

تعداد نتایج: 598725  

Journal: :BIO web of conferences 2021

Climate fluctuations in the Quaternary period significantly influenced evolution and distribution of plants, which caused to a serious genetic effects speciation activity [1]. Thus, Central Asia is distinguished by wide variety flora, including 9520 species, while 20% are endemics [2]. Great phenotypic diversity wild flora Uzbekistan, numbering about 4400 species vascular plants determined pecu...

2001
Sharon Kühlmann Juha Heikkinen Aila Särkkä Urban Hjorth

The relationships between the spatial locations and attributes of trees and the abundance of individual ground vegetation species, were studied on a large database from the 1985-86 National Forest Inventory of Finland. The influence potential, derived from ecological field theory, was used as an index to quantify the effect of a tree species, and the percentage cover was applied as a measure of...

2017
Ernst van der Maaten Andreas Hamann Marieke van der Maaten‐Theunissen Aldo Bergsma Geerten Hengeveld Ron van Lammeren Frits Mohren Gert‐Jan Nabuurs Renske Terhürne Frank Sterck

Bioclimate envelope models have been widely used to illustrate the discrepancy between current species distributions and their potential habitat under climate change. However, the realism and correct interpretation of such projections has been the subject of considerable discussion. Here, we investigate whether climate suitability predictions correlate to tree growth, measured in permanent inve...

2002
JOHN T. LONGINO JONATHAN CODDINGTON ROBERT K. COLWELL

Species richness is an important characteristic of ecological communities, but it is difficult to quantify. We report here a thorough inventory of a tropical rain forest ant fauna and use it to evaluate species richness estimators. The study was carried out in ;1500 ha of lowland rain forest at La Selva Biological Station, Costa Rica. Diverse methods were used, including canopy fogging, Malaise...

Journal: :Ecological applications : a publication of the Ecological Society of America 2010
Jeremy W Lichstein Jonathan Dushoff Kiona Ogle Anping Chen Drew W Purves John P Caspersen Stephen W Pacala

Geographically extensive forest inventories, such as the USDA Forest Service's Forest Inventory and Analysis (FIA) program, contain millions of individual tree growth and mortality records that could be used to develop broad-scale models of forest dynamics. A limitation of inventory data, however, is that individual-level measurements of light (L) and other environmental factors are typically a...

Journal: :Revista da Sociedade Brasileira de Medicina Tropical 2014
Izabella de Oliveira Pinheiro Milton Ferreira de Castro Murilo Gonçalves Adilson da Costa Lima Glênia Maria de Magalhães Campos Adalberto Mitterofhe Ricardo José de Paula Souza E Guimarães José Dilermando Filho Andrade Elaine Soares Coimbra

INTRODUCTION This study aimed to inventory the phlebotomine sandfly fauna present in the urban area of Juiz de Fora, with an emphasis on the genus Lutzomyia. METHODS Capture was performed from March to September 2012, using HP light traps placed at peridomestic sites, in a municipal kennel and a forest biome. RESULTS A total of 133 specimens were captured, representing eight species of the ...

Journal: :journal of optimization in industrial engineering 2010
mehdi seif barghy maghsoud amiri mostafa heidari

multi-echelon inventory systems are one of the most important and attractive areas in modelling supply chain management so that several researches and studies have been done about. in this paper, the total cost function of a two-echelon inventory system with central warehouse and many identical retailers controlled by continuous review inventory policy is estimated. we have assumed the demand i...

Journal: :Ecological Informatics 2013
Heather E. Lintz Andrew N. Gray Bruce McCune

CrossMark ARTICLE INFO ABSTRACT Article history: Data from large-scale biological inventories are essential for understanding and managing Earth's ecosystems. The Forest Inventory and Analysis Program (FIA) of the U.S. Forest Service is the largest biological inventory in North America; however, the FIA inventory recently changed from an amalgam of different approaches to a nationally-standardi...

2011
Adam T. Clark Jessica J. Rykken Brian D. Farrell

Many studies have examined how island biogeography affects diversity on the scale of island systems. In this study, we address how diversity varies over very short periods of time on individual islands. To do this, we compile an inventory of the ants living in the Boston Harbor Islands National Recreation Area, Boston, Massachusetts, USA using data from a five-year All Taxa Biodiversity Invento...

2013
Nilesh Timilsina Wendell P. Cropper Francisco J. Escobedo Joanna M. Tucker Lima

Managing forests for multiple ecosystem services such as timber, carbon, and biodiversity requires information on ecosystem structure and management characteristics. National forest inventory data are increasingly being used to quantify ecosystem services, but they mostly provide timber management and overstory data, while data on understory shrub and herbaceous diversity are limited. We obtain...

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