Results 81 to 90 of about 691,780 (291)

Subtropical rainforest turnover along an altitudinal gradient

open access: yes, 2011
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Laidlaw, Melinda J   +3 more
openaire   +2 more sources

Phenology Patterns Across a Rupestrian Grassland Altitudinal Gradient

open access: yes, 2016
International audiencePhenology is the study of recurrent biological events in the life cycle of organisms. For plants, reproductive events such as flowering and fruiting are critical stages in their life cycles, which also greatly affect other organisms
Morellato, Leonor Patrícia Cerdeira   +5 more
core   +1 more source

Agricultural Diversification at the Margin. Strategies and Determinants in Italian Mountain and Remote Areas

open access: yesAgribusiness, EarlyView.
ABSTRACT This paper explores the convergence in on‐farm diversification strategies of agricultural holdings, between remote areas and more central ones. Using Italian farm‐level data, we explore the determinants of diversification strategies across farms.
Gianluca Grilli   +2 more
wiley   +1 more source

Els lepidòpters de la vall d’Alinyà (Alt Urgell, NE de la península Ibèrica): algunes consideracions sobre l’altitud i la classificació biogeogràfica

open access: yesArxius de Miscel-lània Zoològica, 2007
Els resultats obtinguts en el cens de lepidòpters portat a terme a la vall d’Alinyà durant els anys 2000 i 2001, que s'adjunten en annex, indiquen que la distribució altitudinal de les espècies considerades mediterrànies i les considerades eurasiàtiques ...
F. Vallhonrat   +9 more
doaj   +1 more source

Contrasting altitudinal variation of alpine plant communities along the Swedish mountains

open access: yesEcology and Evolution, 2020
Changes in abiotic factors along altitudinal and latitudinal gradients cause powerful environmental gradients. The topography of alpine areas generates environmental gradients over short distances, and alpine areas are expected to experience greater ...
Johannes Måsviken   +2 more
doaj   +1 more source

Overcoming the Phase Discontinuity Problem in RIS Optimization: A Robust and Scalable Phase‐Aware Deep Regression Framework via Hybrid CNN–LSTM Architecture

open access: yesAdvanced Intelligent Systems, EarlyView.
The phase discontinuity problem—where the cyclic nature of phase angles causes catastrophic errors near the ±π boundary—is a fundamental obstacle in learning‐based reconfigurable intelligent surface (RIS) optimization. A phase‐aware hybrid CNN–LSTM framework resolves this by decomposing phase predictions into sine–cosine components, mapping circular ...
Seda Savaşçı Şen   +3 more
wiley   +1 more source

Vegetation Dynamics along the Altitudinal Gradient

open access: yes
In mountainous or hilly terrain, the term “altitudinal gradient” describes a change in environmental parameters such as temperature, precipitation, and soil properties with increasing altitude. This gradient has a significant impact on vegetation dynamics and its association.
Aminul Haq   +4 more
openaire   +1 more source

Mapping Lupinus polyphyllus density and distribution along road verges using unmanned aerial vehicle (UAV)–based remote sensing

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Road verges function as refuges for semi‐natural species, but they can also facilitate the spread of non‐native plants such as Lupinus polyphyllus. Unmanned aerial vehicle (UAV)–based remote sensing is a promising tool for mapping these species; however, its application in roadside contexts remains limited.
Elin L. Blomqvist   +3 more
wiley   +1 more source

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

open access: yesThe Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

Effects of intermittent exposure to hypobaria and cold on the microarchitecture and morphofunctional profile of rat gastrocnemius muscle

open access: yesThe Anatomical Record, EarlyView.
Abstract Intermittent hypobaric hypoxia (IHH) enhances oxygen transport, muscle metabolism, and cardiovascular health; however, the combined effects of hypobaria and cold are less well understood. Exposure to these stressful environmental factors, even intermittently, can affect skeletal muscle due to its plasticity, thereby altering its metabolic and ...
Garoa Santocildes   +3 more
wiley   +1 more source

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