نتایج جستجو برای: quadrat

تعداد نتایج: 457  

Journal: :International Journal of Environment 2022

Freshwater plants play a paramount role in an aquatic ecosystem. However, only limited studies have been carried out on freshwater plants. Therefore, the study aimed to assess diversity of different bodies Punakha District, correlation plant species with environmental variables, and local community difference use knowledge district. A total 20 water were selected using stratified sampling metho...

Journal: :Asian Journal of Fisheries and Aquatic Research 2022

This research aims to determine the potential of seagrass Halophila sp. in absorbing mercury selected coastal barangays Malita, Davao Occidental. The study employs a quantitative type where strategies focus on quantifying collection and analysis data. was conducted from October 2020 December 2021 three Barangays Occidental namely Brgy.Culaman, Brgy. New Argao Tingolo. Transect line quadrat meth...

Journal: :Diversity 2021

Impacts of barriers, including dam removals, on aquatic diversity are poorly understood. We assessed freshwater mussel assemblages and microhabitat downstream uncontrolled controlled low-head dams removals in Michigan, USA. The objectives this study were to quantify whether parameters differ by anthropogenic barrier along a gradient, determine that predictors density. Sampling consisted standar...

Journal: :Knowledge and Management of Aquatic Ecosystems 2021

Aquatic invasive species are among the greatest threats to freshwater biodiversity. The aim of this study was understand effects two watermilfoil ( Myriophyllum heterophyllum Michx. and spicatum L.) on native macrophyte communities assess community response a range invasion intensities as well examine influence canopy types. We hypothesized that some would be more sensitive invasion, facilitate...

Journal: :Journal of Threatened Taxa 2023

The information on selection of nesting habitat and nest directionality for arboreal species is crucial in developing conservation management plan the species. We studied factors which affect orientation by using quadrat sampling method Nelliyampathy Reserve Forest, Kerala. A total 119 sites were observed 26 different tree four types. Around 56.30% 36.13% nests sighted contiguous forests planta...

Journal: :Land 2023

Land use of the sub-Himalayan region is not that intensive like intensively land-managed Punjab, India. resources sub-Himalayas must be managed effectively for sustainable development by preparing carbon inventories and data banks. Such macro-level studies have been conducted yet in present study area, thus were to suggest land management options. To achieve study’s desired goal, 33 tree-based ...

Journal: :حفاظت گیاهان 0
فرشته صفری محمد بنایان اول محمد حسن راشد محصل

understanding the spatial distribution of weeds would provide good results for the commercial applications of future research programs, development forecast desirable of yield loss and understanding the processes that cause changes in spatial and temporal distribution weeds. in this order an experiment was conducted in 1388 to find the effects of biological interactions, climate and agricultura...

2017
Scott M. Reid Todd J. Morris

Watershed inventories and population monitoring are essential components of efforts to conserve and recover freshwater mussel diversity in Canada. We used two datasets to assess the efficacy of a quadrat-based sampling protocol for: (1) detecting mussel species at risk; (2) characterizing species composition; (3) providing accurate estimates of abundance; and (4) detecting changes in density. T...

Journal: :Cartography and Geographic Information Science 2021

The mapping of cultural ecosystem services through online public participation GIS (PPGIS) has predominantly relied on geographic entities, such as points and polygons, to collect spatial data, regardless their limitations. As the potential PPGIS support planning design keeps growing, so does need for more knowledge about data quality suitable entities data. Using tool, “My Green Place,” 449 re...

Journal: :Environments 2021

Phytoremediation of mine soils contaminated by potentially toxic elements (PTEs) requires the use tolerant plants given specific conditions toxicity in altered soil ecosystems. In this sense, a survey was conducted an ancient Hg-mining area named “El Terronal” (Asturias, Spain) which is severely affected PTE contamination (As, Hg, Pb) to obtain inventory spontaneous natural vegetation. A detail...

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