Results 71 to 80 of about 232,366 (358)

UPSCALING OF SOLAR INDUCED CHLOROPHYLL FLUORESCENCE FROM LEAF TO CANOPY USING THE DART MODEL AND A REALISTIC 3D FOREST SCENE [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2017
Solar induced chlorophyll a fluorescence (SIF) has been shown to be an excellent proxy of photosynthesis at multiple scales. However, the mechanical linkages between fluorescence and photosynthesis at the leaf level cannot be directly applied at canopy ...
W. Liu, W. Liu, W. Liu, J. Atherton, M. Mõttus, A. MacArthur, H. Teemu, K. Maseyk, I. Robinson, E. Honkavaara, A. Porcar-Castell   +10 more
doaj   +1 more source

Spatial metrics in fire ecology: seeking consistency amidst complexity

Biological Reviews, EarlyView.
ABSTRACT Technological advances, including remote sensing, have led to a proliferation of metrics used in ecological studies to examine spatial patterns of fire regimes and their ecological effects. Researchers can use many different metrics to analyse spatial variation in both fire events and resulting fire regimes, including fire size, shape ...
Alexander R. Carey, Geoffrey J. Cary, Teigan Cremona, Hugh F. Davies, Brett P. Murphy, Sam C. Banks   +5 more
wiley   +1 more source

Net below canopy fluxes in Canarian laurel forest canopies

Journal of Hydrology, 2002
Bulk precipitation, stemflow and throughfall were collected in a Canarian laurel forest (North Tenerife), and chemically analysed to determine the net below canopy fluxes. Annual negative fluxes were found for H þ ,N O 3 ,S O 4 and Cl 2 and annual positive fluxes for Ca 2þ ,M g 2þ ,K þ ,N a þ , HCO3 ,P O 42 and DOC.
Jesús R. Aboal, M.Soledad Jiménez, Domingo Morales, José M. Hernández   +3 more
openaire   +1 more source

Patterns of understorey bird diversity across Amazonian forests: survey effort and range maps predict local species richness

Ecography, EarlyView.
Species diversity typically increases from higher to lower latitudes, but the regional‐scale variation along this geographic gradient remains unclear. It has been suggested that species diversity throughout Amazonia generally increases westward toward the Andes, but this pattern and its environmental determinants require further investigation for most ...
Pilar L. Maia‐ Braga, Anderson S. Bueno, Marina F. A. Maximiano, Torbjørn Haugaasen, Marina Anciães, John G. Blake, Bette A. Loiselle, Sergio H. Borges, Juliana Menger, Sidnei Dantas, Ramiro D. Melinski, Affonso H. N. Souza, Fernando H. T. de Abreu, Roberta L. Boss, Carlos A. Peres   +14 more
wiley   +1 more source

Non‐stationary forest responses to hotter droughts: a temporal perspective considering the role of past legacies

Ecography, EarlyView.
Global change is altering forests worldwide, with multiple consequences for ecosystem functioning. Temporal changes in climate, and extreme, compounded weather events like hotter droughts are affecting the demography, composition and function of forests, leading to a highly uncertain future.
Xavier Serra‐Maluquer, Julen Astigarraga, César Morales-Molino, Paloma Ruiz-Benito   +3 more
wiley   +1 more source

Canopy Height Estimation Using Sentinel Series Images through Machine Learning Models in a Mangrove Forest

Remote Sensing, 2020
Canopy height serves as a good indicator of forest carbon content. Remote sensing-based direct estimations of canopy height are usually based on Light Detection and Ranging (LiDAR) or Synthetic Aperture Radar (SAR) interferometric data.
Sujit Madhab Ghosh, Mukunda Dev Behera, Somnath Paramanik   +2 more
doaj   +1 more source

Die Baumkronenspinnen (Araneae) des Leipziger Auwaldes [PDF]

, 2012
The canopy spiders of the floodplain forest in Leipzig have become a focus of ecological studies in recent years. In 2006 we sampled 30 tree canopies in the ‘Burgaue’ nature reserve with pyrethrum knock-down fogging, recording 502 adult spiders belonging
Floren, Andreas, Otto, Stefan
core  

Light-related variation in sapling architecture of three shade-tolerant tree species of the Mexican rain forest [PDF]

, 2008
The crown architecture of three shade-tolerant tree species (two subcanopy and one mid-canopy) was analyzed in relation to the light regime of the forest understorey.
Bongers, F., Martinez-Sanchez, J.L., Meave, J.   +2 more
core   +2 more sources

Precipitation and tree biomass correlate with the diversity and functional composition of tropical rainforest cricket assemblages across climate and disturbance gradients

Ecography, EarlyView.
Disturbance‐driven changes in rainforest structure and environmental conditions can alter ecosystem functioning, yet the consequences for invertebrate communities – key contributors to decomposition, herbivory, and trophic interactions – are not fully understood, particularly in relation to structural changes in vegetation.
Charlotte E. Raven, Andy G. Howe, David C. F. Rentz, Emma J. Mackintosh, Andrew R. Marshall, Helen F. Nahrung   +5 more
wiley   +1 more source

An approach to detect and map forest canopy layers in Swiss mountain forests using nationwide airborne laser scanning data

International Journal of Applied Earth Observations and Geoinformation
Understanding vertical forest structure is essential for forest management and is strongly linked to ecosystem functioning. In countries with protective forests, sustainable management is key to protecting humans and infrastructure from natural hazards ...
Alexander Bast, Martina L. Hobi, Christian Ginzler, Livia Piermattei, Christoph Fischer, Petia S. Nikolova, Leon J. Bührle, Tobias Kalt, Frank Graf   +8 more
doaj   +1 more source