Results 11 to 20 of about 275,949 (304)

How Important Are Those Fracture Zones? Scale Dependent Characteristics Revealed Through Field Studies and an Integrated Hydrological Model of a Mountain Headwater Catchment

open access: yesFrontiers in Water, 2021
Modeling groundwater flow in bedrock can be particularly challenging due to heterogeneities associated with fracture zones. However, fracture zones can be difficult to map, particularly in forested areas where tree cover obscures land surface features ...
Diana M. Allen, Alexandre H. Nott
doaj   +1 more source

Estimating the spatial and temporal distribution of species richness within Sequoia and Kings Canyon National Parks. [PDF]

open access: yes, 2014
Evidence for significant losses of species richness or biodiversity, even within protected natural areas, is mounting. Managers are increasingly being asked to monitor biodiversity, yet estimating biodiversity is often prohibitively expensive.
Holguin, Andrew   +3 more
core   +6 more sources

Predicting phytochemical diversity of medicinal and aromatic plants (MAPs) across eco-climatic zones and elevation in Uttarakhand using Generalized Additive Model

open access: yesScientific Reports, 2023
The present study uses a systematic approach to explore the phytochemical composition of medicinal plants from Uttarakhand, Western Himalaya. The phytochemical composition of medicinal plants was analyzed based on (i) the presence of different chemical ...
Deepti Tiwari   +5 more
doaj   +1 more source

Rapid submarine ice melting in the grounding zones of ice shelves in West Antarctica. [PDF]

open access: yes, 2016
Enhanced submarine ice-shelf melting strongly controls ice loss in the Amundsen Sea embayment (ASE) of West Antarctica, but its magnitude is not well known in the critical grounding zones of the ASE's major glaciers.
Khazendar, Ala   +8 more
core   +1 more source

Expected impacts of climate change on forests: Czech Republic as a case study

open access: yesJournal of Forest Science, 2011
We provide fundamental information about the future development of selected climate elements in relation to anticipated threat to forests in the Czech Republic.
T. Hlásny   +4 more
doaj   +1 more source

Experimental salt marsh islands: a model system for novel metacommunity experiments [PDF]

open access: yes, 2017
Shallow tidal coasts are characterised by shifting tidal flats and emerging or eroding islands above the high tide line. Salt marsh vegetation colonising new habitats distant from existing marshes are an ideal model to investigate metacommunity theory ...
Balke, Thorsten   +8 more
core   +2 more sources

VARIATION IN THE FLOWERING PHENOLOGY OF AN EPIPHYTIC BROMELIAD ALONG AN ELEVATIONAL GRADIENT

open access: yesActa Biológica Colombiana, 2020
Elevational patterns in flowering phenology have been reported for trees, shrubs and herbs. However, for vascular epiphytes that rely on atmospheric sources for humidity and nutrients, and depend on phorophyte microhabitat, elevational patterns of ...
Judith Isabel López López   +2 more
doaj   +1 more source

DIGITAL EXTRACTION AND CHANGE ANALYSIS OF ALTITUDINAL NATURAL ZONES IN TIANSHAN TOMUR NATURAL HERITAGE SITE [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The Tomur Natural Heritage Site possesses the most typical altitudinal natural zones on the south slope of the Tianshan Mountains. Five altitudinal zones have developed on the south faced slope, including: warm temperate desert zone, mountain steppe zone,
H. Wan   +5 more
doaj   +1 more source

Agroecological, climatic, land elevation and socio-economic determinants of pesticide use at the farm level in Bangladesh [PDF]

open access: yes, 2015
This study examines the influence of agroecology, climate, land elevation and socio-economic factors on pesticide use at the farm level using a large survey data of 2083 farms from 17 districts covering 10 agroecological zones in Bangladesh by applying a
Rahman, S
core   +2 more sources

A phased creation of digital elevation model for hydrodynamic modeling in flat zones

open access: yesFacta universitatis - series: Architecture and Civil Engineering, 2022
Hydrodynamic modeling of rivers with flood simulation requires an accurate description of the riverbed and inundation morphology. Depending on a geodetic survey method and data collected, the digital elevation models with different accuracy can be created.
Borko Radivojevic   +3 more
openaire   +2 more sources

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