Results 81 to 90 of about 1,169,928 (316)

Höhengradienten in der Biodiversitäts-Forschung: eine Übersicht unter Berücksichtigung des Klimawandels [PDF]

, 2013
Mountains, with their isolated position and altitudinal belts, are hotspots of biodiversity. Their flora and fauna have been observed worldwide since the days of Alexander von Humboldt, which has led to basic knowledge and understanding of species ...
Blaschke, Markus, Bässler, Claus, Fischer, Anton   +2 more
core  

Quantitative relationships between benthic diatom assemblages and water chemistry in Macquarie Island lakes and their potential for reconstructing past environmental changes [PDF]

, 2008
This study is the first published survey of diatom-environment relationships Oil sub-Antarctic Macquarie Island. Fifty-eight sites in 50 coastal and inland lakes were sampled for benthic diatoms and water chemistry. 208 diatom species from 34 genera were
Andrew McMinn, Battarbee, Brothers, Bryden, Davis, Dominic A. Hodgson, Eriksen, Hodgson, Hodgson, Juggins, Krystyna M. Saunders, Lim, Roberts, Selkirk, Tweedie, Van de Vijver, Van de Vijver, Vyverman, Wolfe, Wong   +19 more
core   +2 more sources

Steep Altitudinal Gradients Can Benefit Lowland Bats

Folia Zoologica, 2010
(Uploaded by Plazi for the Bat Literature Project) This is a report on a post-lactating female soprano pipistrelle, Pipistrellus pygmaeus, which in autumn exploited habitats from sea level to the transition zone between alpine and sub-alpine areas. It travelled more than 12.3 kilometres from its roost and returned to its roost at sea level on all four ...
openaire   +1 more source

The Bitter Taste of Brazil's Temporary Import Ban on Robusta Coffee

Agribusiness, EarlyView.
ABSTRACT Brazil, a leading Robusta coffee producer and exporter, faced a significant drought in 2016–2017, which drastically reduced production and depleted stocks. Consequently, Brazil temporarily permitted the import of one million 60‐kg bags of Robusta coffee in the spring 2017. An import ban was imposed shortly afterward due to lobbying by domestic
Hanifi Otgun, John Beghin, Fernando Maximiliano   +2 more
wiley   +1 more source

Bioindicators for Assessing Soil Quality in Ecuador’s Jun Jun Micro-Watershed

Agronomy
The evaluation of soil quality in different altitudinal gradients, with vegetative and non-vegetative subareas, is crucial for proper soil functioning and optimal crop growth, thus contributing to the sustainability of agroecosystems.
Orlando Meneses Quelal, Wilfrido Yánez Yánez, Jesús Aranguren Carrera   +2 more
doaj   +1 more source

Bryophyte diversity patterns in flooded and tierra firme forests in the Araracuara Region, Colombian Amazonia [PDF]

, 2004
We investigated patterns of bryophyte species richness and composition in two forest types of Colombian Amazonia, non-flooded tierra firme forest and floodplain forest of the Caquetá River.
Alvarez, Esteban, Benavides, Juan C., Idarraga, Alvaro   +2 more
core  

Determinants of species richness patterns in the Netherlands across multiple taxonomic groups [PDF]

, 2009
We examined the species richness patterns of five different species groups (mosses, reptiles and amphibians, grasshoppers and crickets, dragonflies, and hoverflies) in the Netherlands (41,500 km2) using sampling units of 5 × 5 km. We compared the spatial
Barendrecht, A., Kleukers, R., Schouten, M.A., Verweij, P.A.   +3 more
core   +2 more sources

Testing for local adaptation and evolutionary potential along 1 altitudinal gradients in rainforest Drosophila: beyond laboratory estimates

bioRxiv, 2016
Predicting how species will respond to the rapid climatic changes predicted this century is an urgent task. Species Distribution Models (SDMs) use the current relationship between environmental variation and species’ abundances to predict the effect of ...
E. O’Brien, Megan Higgie, A. Reynolds, A. Hoffmann, J. Bridle   +4 more
semanticscholar   +1 more source

Chironomid (Insecta: Diptera) assemblages along an Andean altitudinal gradient [PDF]

Aquatic Biology, 2014
Chironomidae are an abundant, diverse and ecologically important group common in mountain streams worldwide, but their patterns of distribution have been poorly described for the Andes region in western-central Argentina. Here we examine chironomid assemblages along an altitudinal gradient in the Mendoza River basin to study how spatial and seasonal ...
EE Scheibler, SA Roig-Juñent, MC Claps
openaire   +2 more sources

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

Agribusiness, 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, Francesco Pagliacci, Paola Gatto   +2 more
wiley   +1 more source