You searched for:
Subject term
ecoregions
Remove constraint Subject term: ecoregions
Subject term
climate change
Remove constraint Subject term: climate change
PubAg
Main content area
Limit your search
Search
279 Search Results
« Previous |
1 - 20 of 279
|
Next »
Search Results
- Author:
- Law, B.E.; Turner, D.; Campbell, J.; Sun, O.J.; Van Tuyl, S.; Ritts, W.D.; Cohen, W.B.
- Source:
- Global change biology 2004 v.10 no.9 pp. 1429-1444
- ISSN:
- 1354-1013
- Subject:
- primary productivity; soil organic carbon; leaf area index; vegetation cover; carbon sequestration; remote sensing; source-sink relationships; coniferous forests; forest stands; forest fires; simulation models; climate change; spatial data; spatial variation; climatic factors; ecoregions; age structure; global carbon budget; data analysis; Cascade Mountain region; Oregon
- Abstract:
- ... We used a spatially nested hierarchy of field and remote-sensing observations and a process model, Biome-BGC, to produce a carbon budget for the forested region of Oregon, and to determine the relative influence of differences in climate and disturbance among the ecoregions on carbon stocks and fluxes. The simulations suggest that annual net uptake (net ecosystem production (NEP)) for the whole fo ...
- Handle:
- 10113/40774
- DOI:
- 10.1111/j.1365-2486.2004.00822.x
- https://doi.org/10.1111/j.1365-2486.2004.00822.x
- Author:
- Hall, R.J.; Joss, B.N.; Sidders, D.M.; Keddy, T.J.
- Source:
- Forestry chronicle 2004 v.80 no.6 pp. 727-735
- ISSN:
- 0015-7546
- Subject:
- afforestation; carbon sequestration; climate; climate change; ecoregions; environmental factors; growing season; heat sums; highlands; land suitability; models; pH; planting; soil; trees; Canada
- Abstract:
- ... Under Action Plan 2000, the Feasibility Assessment of Afforestation for Carbon Sequestration (FAACS) initiative is exploring the feasibility of large-scale afforestation as an effective response to Canada's climate change commitments. One component of the FAACS initiative is a "backcast" or inventory of afforestation activity that has occurred on privately owned land since 1990. Within the Prairie ...
- DOI:
- 10.5558/tfc80727-6
- https://doi.org/10.5558/tfc80727-6
- Author:
- Zhao, Y.Z.; Zou, X.Y.; Cheng, H.; Jia, H.K.; Wu, Y.Q.; Wang, G.Y.; Zhang, C.L.; Gao, S.Y.
- Source:
- Journal of environmental management 2006 v.80 no.2 pp. 120-131
- ISSN:
- 0301-4797
- Subject:
- ecosystems; ecoregions; environmental assessment; anthropogenic activities; land use; economic development; population growth; climate change; environmental impact; environmental degradation; risk assessment; models; environmental indicators; environmental protection; decision support systems; environmental policy; China
- DOI:
- 10.1016/j.jenvman.2005.08.019
- PubMed:
- 16338056
- https://doi.org/10.1016/j.jenvman.2005.08.019
- Author:
- Hu, Feng Sheng; Brubaker, Linda B.; Gavin, Daniel G.; Higuera, Philip E.; Lynch, Jason A.; Rupp, T. Scott; Tinner, Willy
- Source:
- Mitigation and adaptation strategies for global change 2006 v.11 no.4 pp. 829-846
- ISSN:
- 1381-2386
- Subject:
- Picea glauca; Picea mariana; Populus; atmospheric circulation; boreal forests; charcoal; climate change; ecoregions; ecosystems; fire regime; lightning; paleoclimatology; plant communities; tundra; woodlands; Alaska
- Abstract:
- ... We synthesize recent results from lake-sediment studies of Holocene fire-climate-vegetation interactions in Alaskan boreal ecosystems. At the millennial time scale, the most robust feature of these records is an increase in fire occurrence with the establishment of boreal forests dominated by Picea mariana: estimated mean fire-return intervals decreased from >=300 yrs to as low as ~80 yrs. This fi ...
- DOI:
- 10.1007/s11027-005-9015-4
- https://doi.org/10.1007/s11027-005-9015-4
- Author:
- Homann, Peter S.; Kapchinske, Jason S.; Boyce, Andrew
- Source:
- Biogeochemistry 2007 v.85 no.3 pp. 303-316
- ISSN:
- 0168-2563
- Subject:
- temperate forests; clay; carbon sinks; texture; soil heterogeneity; mineralogy; atmospheric precipitation; silt; fauna; climate; mineral soils; equations; soil organic matter; climate change; soil texture; temperature; silt fraction; clay fraction; evapotranspiration; ecoregions; mixing; nitrogen; organic horizons; regression analysis; environmental factors; carbon nitrogen ratio; soil profiles; United States
- Abstract:
- ... Soil is a prominent component of terrestrial C and N budgets. Soil C and N pools are influenced by, and may reciprocally influence, many environmental factors. Our objective was to determine the quantitative relations of surface mineral-soil organic C, N, and C/N ratios to climate and soil texture across seven ecological regions that make up the conterminous USA. Up to 608 soil profiles per region ...
- DOI:
- 10.1007/s10533-007-9139-6
- https://doi.org/10.1007/s10533-007-9139-6
- Author:
- Niederberger, Thomas D.; McDonald, Ian R.; Hacker, Amy L.; Soo, Rochelle M.; Barrett, John E.; Wall, Diana H.; Cary, S. Craig
- Source:
- Environmental microbiology 2008 v.10 no.7 pp. 1713-1724
- ISSN:
- 1462-2912
- Subject:
- DNA libraries; Deinococcus; Thermus; Xanthomonas; biodiversity; climate change; clones; community structure; ecoregions; ecosystems; edaphic factors; environmental impact; habitats; land use; microbial activity; microbial communities; nucleotide sequences; nutrient availability; organic matter; physical control; ribosomal RNA; salinity; soil analysis; soil invertebrates; soil microorganisms; soil productivity; soil structure; temperature; Antarctica
- Abstract:
- ... Biotic communities and ecosystem dynamics in terrestrial Antarctica are limited by an array of extreme conditions including low temperatures, moisture and organic matter availability, high salinity, and a paucity of biodiversity to facilitate key ecological processes. Recent studies have discovered that the prokaryotic communities in these extreme systems are highly diverse with patchy distributio ...
- DOI:
- 10.1111/j.1462-2920.2008.01593.x
- PubMed:
- 18373679
- https://doi.org/10.1111/j.1462-2920.2008.01593.x
- Author:
- Chhin, Sophan; Hogg, E.H. (Ted); Lieffers, Victor J.; Huang, Shongming
- Source:
- Forest ecology and management 2008 v.256 no.10 pp. 1692-1703
- ISSN:
- 0378-1127
- Subject:
- Pinus contorta var. latifolia; forest trees; tree growth; climate change; tree classes; forest yields; dendrochronology; altitude; ecoregions; montane forests; climatic factors; Alberta
- Abstract:
- ... We examined 65 lodgepole pine (Pinus contorta Dougl. ex Loud. var. latifolia Engelm.) sites in Alberta using a dendrochronological approach in order to examine the relationships between climate and growth of lodgepole pine across elevational ecoregions and diameter size classes. The 4 elevational ecoregions sampled included the Boreal Highlands (BH: 13 sites); the Foothills (FH: 36 sites); a group ...
- DOI:
- 10.1016/j.foreco.2008.02.046
- https://doi.org/10.1016/j.foreco.2008.02.046
- Author:
- Lenihan, James M.; Bachelet, Dominique; Neilson, Ronald P.; Drapek, Raymond
- Source:
- Global and planetary change 2008 v.64 no.1-2 pp. 16-25
- Subject:
- history; geographical distribution; carbon dioxide; simulation models; dynamic models; ecoregions; fire ecology; geographical variation; air temperature; fire suppression; thematic maps; climate change; gas emissions; ecosystems; climatic factors; vegetation; prediction; United States
- Abstract:
- ... A modeling experiment was designed to investigate the impact of fire management, CO2 emission rate, and the growth response to CO2 on the response of ecosystems in the conterminous United States to climate scenarios produced by three different General Circulation Models (GCMs) as simulated by the MC1 Dynamic General Vegetation Model (DGVM). Distinct regional trends in response to projected climati ...
- Handle:
- 10113/27107
- DOI:
- 10.1016/j.gloplacha.2008.01.006
- https://doi.org/10.1016/j.gloplacha.2008.01.006
- Author:
- Verbyla, David
- Source:
- Global ecology and biogeography 2008 v.17 no.4 pp. 547-555
- ISSN:
- 1466-822X
- Subject:
- basins; boreal forests; buffers; carbon; climate change; data collection; ecoregions; green leafy vegetables; growing season; insects; inventories; leaves; linear models; maritime climate; photosynthesis; roots; satellites; summer; temperature; tundra; Alaska; Arctic region
- Abstract:
- ... To examine the trends of 1982-2003 satellite-derived normalized difference vegetation index (NDVI) values at several spatial scales within tundra and boreal forest areas of Alaska. Arctic and subarctic Alaska. Annual maximum NDVI data from the twice monthly Global Inventory Modelling and Mapping Studies (GIMMS) NDVI 1982-2003 data set with 64-km² pixels were extracted from a spatial hierarchy incl ...
- DOI:
- 10.1111/j.1466-8238.2008.00396.x
- https://doi.org/10.1111/j.1466-8238.2008.00396.x
- Author:
- PARRA, JUAN L.; MONAHAN, WILLIAM B.
- Source:
- Global change biology 2008 v.14 no.10 pp. 2215-2231
- ISSN:
- 1354-1013
- Subject:
- algorithms; biodiversity; biogeography; climate; climate change; data collection; ecoregions; mammals; models; mountains; prediction; temperature; uncertainty; weather; California; Sonoran Desert
- Abstract:
- ... Empirical species distribution models are widely used to predict the effects of climate change on biodiversity distribution but rely on multiple assumptions about the certainty of the locality and climate data. Here, we assess the effect of historical climate data variability when forecasting geographic responses of California mammals to 20th century climate change. We first used two methods to de ...
- DOI:
- 10.1111/j.1365-2486.2008.01649.x
- https://doi.org/10.1111/j.1365-2486.2008.01649.x
- Author:
- Rowhani, Pedram; Lepczyk, Christopher A.; Linderman, Marc A.; Pidgeon, Anna M.; Radeloff, Volker C.; Culbert, Patrick D.; Lambin, Eric F.
- Source:
- Ecosystems 2008 v.11 no.6 pp. 854-867
- ISSN:
- 1432-9840
- Subject:
- biogeography; birds; climate change; ecoregions; energy; environmental factors; geographical distribution; geographical variation; habitats; image analysis; moderate resolution imaging spectroradiometer; species diversity; surveys; tropics; United States
- Abstract:
- ... Habitat transformations and climate change are among the most important drivers of biodiversity loss. Understanding the factors responsible for the unequal distribution of species richness is a major challenge in ecology. Using data from the North American Breeding Bird Survey to measure species richness and a change metric extracted from the MODerate resolution Imaging Spectroradiometer (MODIS), ...
- DOI:
- 10.1007/s10021-008-9165-9
- https://doi.org/10.1007/s10021-008-9165-9
- Author:
- I. Weustermann; R. Pesch; G. Schmidt; W. Schröder
- Source:
- Environmental sciences Europe 2009 v.21 no.4 pp. 379-392
- ISSN:
- 2190-4707
- Subject:
- acreage; climate; climate change; ecoregions; environmental monitoring; geographic information systems; land classification; landscapes; Germany
- Abstract:
- ... Background, aim and scope The first two articles of this series (Hornsmann et al. 2008; Weustermann et al. 2009) comprised how the Ecological Land Classification of Europe (ELCE) was calculated. Moreover several ecological classes were described exemplarily. In this part 3 of the series the ELCE is compared with two European ecoregionalisations at several levels of differentiation. These are the D ...
- DOI:
- 10.1007/s12302-009-0050-8
- https://doi.org/10.1007/s12302-009-0050-8
- Author:
- GIRARDIN, MARTIN P.; ALI, ADAM A.; CARCAILLET, CHRISTOPHER; MUDELSEE, MANFRED; DROBYSHEV, IGOR; HÉLY, CHRISTELLE; BERGERON, YVES
- Source:
- Global change biology 2009 v.15 no.11 pp. 2751-2769
- ISSN:
- 1354-1013
- Subject:
- climate change; dendrochronology; drought; ecoregions; evapotranspiration; forest stands; occurrence; risk; soil; summer; taiga; temperature; temporal variation; variance; wildfires; Canada; Eurasia
- Abstract:
- ... We investigated changes in wildfire risk over the 1901-2002 ( ad) period with an analysis of broad-scale patterns of July monthly drought code (MDC) variability on 28 forested ecoregions of the North American and Eurasian continents. The MDC is an estimate of the net effect of changes in evapotranspiration and precipitation on cumulative moisture depletion in soils, and is well correlated with ann ...
- DOI:
- 10.1111/j.1365-2486.2009.01869.x
- https://doi.org/10.1111/j.1365-2486.2009.01869.x
- Author:
- ALBRIGHT, THOMAS P.; PIDGEON, ANNA M.; RITTENHOUSE, CHADWICK D.; CLAYTON, MURRAY K.; FLATHER, CURTIS H.; CULBERT, PATRICK D.; WARDLOW, BRIAN D.; RADELOFF, VOLKER C.
- Source:
- Global change biology 2010 v.16 no.8 pp. 2158-2170
- ISSN:
- 1354-1013
- Subject:
- birds; breeding; climate change; community structure; drought; ecoregions; models; species diversity; surveys; tropics; vegetation; vigor; Great Plains region; Midwestern United States
- Abstract:
- ... Droughts are expected to become more frequent under global climate change. Avifauna depend on precipitation for hydration, cover, and food. While there are indications that avian communities respond negatively to drought, little is known about the response of birds with differing functional and behavioural traits, what time periods and indicators of drought are most relevant, or how response varie ...
- DOI:
- 10.1111/j.1365-2486.2009.02120.x
- https://doi.org/10.1111/j.1365-2486.2009.02120.x
- Author:
- Michele L. Thieme; Bernhard Lehner; Robin Abell; John Matthews
- Source:
- Conservation letters 2010 v.3 no.5 pp. 324-331
- ISSN:
- 1755-263X
- Subject:
- biodiversity; climate; climate change; databases; ecoregions; ecosystems; freshwater; freshwater fish; runoff; water resources; Africa; Madagascar
- Abstract:
- ... Anthropogenic climate change and increased human water use are widely expected to place great stress on available water resources across Africa and Madagascar, but the effects of these changes on freshwater biodiversity have only begun to be considered. We used a comprehensive species database and a global hydrologic model to examine the exposure of freshwater biodiversity to discharge and runoff ...
- DOI:
- 10.1111/j.1755-263X.2010.00120.x
- https://doi.org/10.1111/j.1755-263X.2010.00120.x
- Author:
- Irwin, Mitchell T.; Wright, Patricia C.; Birkinshaw, Christopher; Fisher, Brian L.; Gardner, Charlie J.; Glos, Julian; Goodman, Steven M.; Loiselle, Paul; Rabeson, Pascal; Raharison, Jean-Luc; Raherilalao, Marie Jeanne; Rakotondravony, Daniel; Raselimanana, Achille; Ratsimbazafy, Jonah; Sparks, John S.; Wilmé, Lucienne; Ganzhorn, Jörg U.
- Source:
- Biological conservation 2010 v.143 no.10 pp. 2351-2362
- ISSN:
- 0006-3207
- Subject:
- anthropogenic activities; case studies; climate change; conservation areas; ecoregions; forests; grasslands; habitats; indigenous species; landscapes; plant response; species diversity; Madagascar
- Abstract:
- ... Five main conclusions arise from this review of the responses of species to anthropogenic disturbance in Madagascar: First, species' reactions to anthropogenic disturbance are generally negative, but remain poorly known. Our knowledge is patchy among and within higher taxonomic groups; we are still largely gathering case studies. Second, taxonomic groups vary considerably in which proximate factor ...
- DOI:
- 10.1016/j.biocon.2010.01.023
- https://doi.org/10.1016/j.biocon.2010.01.023
- Author:
- Menon, Shaily; Soberón, Jorge; Li, Xingong; Peterson, A. Townsend
- Source:
- Biodiversity and conservation 2010 v.19 no.6 pp. 1599-1609
- ISSN:
- 0960-3115
- Subject:
- biodiversity; climate change; climatic factors; ecoregions; fauna; indigenous species; islands; sea level; Alaska; South America; South East Asia
- Abstract:
- ... Considerable attention has focused on the climatic effects of global climate change on biodiversity, but few analyses and no broad assessments have evaluated effects of sea-level rise on biodiversity. Taking advantage of new maps of marine intrusion under scenarios of 1 and 6 m sea-level rise, we calculated areal losses for all terrestrial ecoregions globally, with areal losses for particular ecor ...
- DOI:
- 10.1007/s10531-010-9790-4
- https://doi.org/10.1007/s10531-010-9790-4
- Author:
- Baker, Barry; Diaz, Henry; Hargrove, William; Hoffman, Forrest
- Source:
- Climatic change 2010 v.98 no.1-2 pp. 113-131
- ISSN:
- 0165-0009
- Subject:
- General Circulation Models; algorithms; animals; climate change; climatic factors; ecoregions; environmental impact; geographical distribution; history; refuge habitats; temperature; vegetation; China
- Abstract:
- ... Changes in climate as projected by state-of-the-art climate models are likely to result in novel combinations of climate and topo-edaphic factors that will have substantial impacts on the distribution and persistence of natural vegetation and animal species. We have used multivariate techniques to quantify some of these changes; the method employed was the Multivariate Spatio-Temporal Clustering ( ...
- DOI:
- 10.1007/s10584-009-9622-2
- https://doi.org/10.1007/s10584-009-9622-2
- Author:
- Tierno de Figueroa, J. M.; López-Rodríguez, M. J.; Lorenz, A.; Graf, W.; Schmidt-Kloiber, A.; Hering, D.
- Source:
- Biodiversity and conservation 2010 v.19 no.5 pp. 1269-1277
- ISSN:
- 0960-3115
- Subject:
- habitat destruction; risk; endangered species; ecoregions; climate change; streams; climate models; altitude; temperature; cold; Plecoptera; Alps region
- Abstract:
- ... We evaluated 516 species and/or subspecies of European stoneflies for vulnerability to climate change according to autoecological data. The variables considered were stream zonation preference, altitude preference, current preference, temperature range preference, endemism and rare species. Presence in ecoregions was used to analyse the vulnerability of taxa in relation to their distribution. We s ...
- DOI:
- 10.1007/s10531-009-9753-9
- https://doi.org/10.1007/s10531-009-9753-9
- Author:
- Christoph Kueffer
- Source:
- Gesunde Pflanzen 2011 v.63 no.2 pp. 63-68
- ISSN:
- 0367-4223
- Subject:
- climate; climate change; databases; ecological invasion; ecoregions; ecosystems; flora; grazing; indigenous species; introduced plants; invasive species; land use; lowlands; managers; mountains; ornamental woody plants; risk; tourism; vertebrate pests; Alps region
- Abstract:
- ... Mountains are currently less affected by plant invasions than lowland ecosystems. Since 2005 the Mountain Invasion Research Network (MIREN, www.miren.ethz.ch) investigates the risk of plant invasions into mountains and develops preventive management strategies. A database of non-native and invasive plant species in mountains worldwide includes currently some 1500 species. Particularly problematic ...
- DOI:
- 10.1007/s10343-011-0248-8
- https://doi.org/10.1007/s10343-011-0248-8