Terrestrial Ecosystem Change
Mostrando 1-12 de 12 artigos, teses e dissertações.
-
1. NET PRIMARY PRODUCTIVITY OF A MOUNTAIN FOREST ECOSYSTEM AS AFFECTED BY CLIMATE AND TOPOGRAPHY
ABSTRACT Response of terrestrial ecosystems to changing climate has become an issue of central importance for land managers and policymakers. Climate extremes and trends have a strong control on productivity of semi-arid mountain ecosystems. Located in a transition zone from continental type climate to relatively mild Black Sea type climate in Turkey, the Il
CERNE. Publicado em: 2020-09
-
2. Litter traits and palatability to detritivores: a case study across bio-geographical boundaries
The activity of the litter-feeding macrofauna affects litter decomposition rates at the local scale, and their preference for particular litter types is mediated by litter traits. Environmental changes such as invasion by exotic plants may change the characteristics of the litter at a local scale, with consequences to ecosystem processes. Here we evaluated t
Nauplius. Publicado em: 2014-12
-
3. Climate change and its effects on terrestrial insects and herbivory patterns
Climate change and extreme weather events affect plants and animals and the direct impact of anthropogenic climate change has been documented extensively over the past years. In this review, I address the main consequences of elevated CO2 and O3 concentrations, elevated temperature and changes in rainfall patterns on the interactions between insects and thei
Neotropical Entomology. Publicado em: 2011-04
-
4. GROUP on earth observations biodiversity observation network (GEO BON) detailed implementation plan version.
2010
Rio de Janeiro: Embrapa Solos. Publicado em: 2010
-
5. Algoritmo regional de monitoramento da taxa de fixação de carbono pelas florestas tropicais da América do Sul / Regional algorithm for monitoring the carbon assimilation by tropical forests of the South America
The most likely scenario for the next decades presents strong modifications in the global environment, including increase of the atmospheric concentration of CO2 and other trace gases, climate change and intensification of the impacts caused by the man s action. These changes may cause important modifications in the composition, structure and distribution of
Publicado em: 2008
-
6. Permanent plot selection in moutainous ecosystems / Seleção de parcelas permanentes em ecossistemas montanhosos
A methodology for the selection of an optimal set of drainage basin with regional representativeness of the environmental variability of the studied area is presented. The methodology is based on the cluster analysis of the second order drainage basins parameterized by environmental characteristics related to the spatial pattern of the land cover, to microcl
Publicado em: 2003
-
7. Equilibration of the terrestrial water, nitrogen, and carbon cycles
Recent advances in biologically based ecosystem models of the coupled terrestrial, hydrological, carbon, and nutrient cycles have provided new perspectives on the terrestrial biosphere’s behavior globally, over a range of time scales. We used the terrestrial ecosystem model Century to examine relationships between carbon, nitrogen, and water dynamics.
The National Academy of Sciences of the USA.
-
8. Potential responses of soil organic carbon to global environmental change
Recent improvements in our understanding of the dynamics of soil carbon have shown that 20–40% of the approximately 1,500 Pg of C stored as organic matter in the upper meter of soils has turnover times of centuries or less. This fast-cycling organic matter is largely comprised of undecomposed plant material and hydrolyzable components associated with
The National Academy of Sciences of the USA.
-
9. Species and functional group diversity independently influence biomass accumulation and its response to CO2 and N
The characteristics of plant assemblages influence ecosystem processes such as biomass accumulation and modulate terrestrial responses to global change factors such as elevated atmospheric CO2 and N deposition, but covariation between species richness (S) and functional group richness (F) among assemblages obscures the specific role of each in these ecosyste
National Academy of Sciences.
-
10. Ancient DNA Provides New Insights into the Evolutionary History of New Zealand's Extinct Giant Eagle
Prior to human settlement 700 years ago New Zealand had no terrestrial mammals—apart from three species of bats—instead, approximately 250 avian species dominated the ecosystem. At the top of the food chain was the extinct Haast's eagle, Harpagornis moorei. H. moorei (10–15 kg; 2–3 m wingspan) was 30%–40% heavier than the largest extant eagle (the
Public Library of Science.
-
11. Late Holocene human-induced modifications to a central Polynesian island ecosystem.
A 7000-year-long sequence of environmental change during the Holocene has been reconstructed for a central Pacific island (Mangaia, Cook Islands). The research design used geomorphological and palynological methods to reconstruct vegetation history, fire regime, and erosion and depositional rates, whereas archaeological methods were used to determine prehist
-
12. Bacteria in the Leaf Ecosystem with Emphasis on Pseudomonas syringae—a Pathogen, Ice Nucleus, and Epiphyte
The extremely large number of leaves produced by terrestrial and aquatic plants provide habitats for colonization by a diversity of microorganisms. This review focuses on the bacterial component of leaf microbial communities, with emphasis on Pseudomonas syringae—a species that participates in leaf ecosystems as a pathogen, ice nucleus, and epiphyte. Among
American Society for Microbiology.