|
Filters
Date Range
Extensions Types
Contacts
Categories Tag Types
|
Categories: Publication;
Types: Citation;
Tags: Data Visualization & Tools,
Landscapes,
Northeast CASC,
Other Landscapes,
Science Tools For Managers
Plants and animals undergo certain life cycle events every year, such as breeding or flowering. Known as phenology, these events are very sensitive to changes in climate. Changes in plant phenology can have cascading effects that impact the herbivore species that depend on the affected plants for food, such as elk, moose, and deer. Therefore, characterizing long term vegetation cycles can provide critical insight into how the behavior and health of a number of species may be altered due to climate change. This project sought to identify how drought conditions influence vegetation phenology, in order to better understand the potential effects on herbivores. Specifically, researchers examined (1) if drought causes...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2014,
CASC,
Completed,
Drought,
Drought,
Historical stream flow records and the forecast for 2004 make the current (1999?2004) drought in the southwestern United States the worst one in the past 80 years for portions of the Upper Colorado River Basin (UCRB). For the Colorado River (near Cisco, Utah), the cumulative stream flow deficit (departure from long-term mean) for the current drought is almost 11 km3, or approximately 2 years of average stream flow.Although the current drought is the most significant,based on historical stream flow records, is it the worst ever? Published in Eos, Transactions, American Geophysical Union, volume 85, issue 32, on pages 301 - 308, in 2004.
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Eos, Transactions, American Geophysical Union
Native to the southwestern U.S. and northwestern Mexico, the desert bighorn sheep is known for its ability to adapt to harsh, arid environments. However, this does not mean the species is immune to the effects of drought. In fact, the fragmented and isolated distribution of the desert mountain ranges that they inhabit means that they can’t follow distant rain storms without traversing broad valleys at significant risk to mortality. This study examined the effects of a 2002 drought on desert bighorn sheep in the Cabeza Prieta National Wildlife Refuge in southwestern Arizona. Specifically, researchers explored how the drought may have affected habitat selection, behavior, and diet of the sheep. For example, when...
Categories: Project;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: 2013,
CASC,
Completed,
Drought,
Drought,
Global Drought Mortality Risks and Distribution is a 2.5 by 2.5 minute grid of global drought mortality risks. Gridded Population of the World (GPW) Version 3 (beta) data provide a baseline estimation of population per grid cell from which to estimate potential mortality risks due to drought hazard. Mortality loss estimates per hazard event are calculated using regional, hazard-specific mortality records of the Emergency Events Database (EM-DAT) that span the 20 years between 1981 and 2000. Data regarding the frequency and distribution of drought hazard are obtained from the Global Drought Hazard Frequency and Distribution dataset. In order to more accurately reflect the confidence associated with the data and procedures,...
To address the data and information gap for characterizing coastal drought, a coastal salinity index (CSI) was developed using salinity data (Conrads 2016; Conrads and Darby, 2017). The CSI uses an approach similar to the Standardized Precipitation Index (SPI), a readily available drought index that is widely used for monitoring meteorological droughts (McKee and others, 1993). The CSI substitutes total monthly precipitation with monthly mean salinity data to determine the probability of recording a given salinity value in a particular month. The initial investigation demonstrated that the index could be used to delineate short- and long-term drought (saline) and wet (high freshwater inflow) conditions; however,...
Categories: Data;
Tags: Everglades National Park,
USGS Science Data Catalog (SDC),
brackish,
ecology,
estuary,
Global Drought Hazard Frequency and Distribution is a 2.5 by 2.5 minute grid based upon the International Research Institute for Climate Predition's (IRI) Weighted Anomaly of Standardized Precipitation (WASP). Utilizing average monthly precipitation data from 1980 through 2000 at a resolution of 2.5 degrees, WASP assesses the precipitation deficit or surplus over a three month temporal window that is weighted by the magnitude of the seasonal cyclic variation in precipitation. The three months' averages are derived from the precipitation data and the median rainfall for the 21 year period is calculated for each grid cell. Grid cells where the three month running average of precipitation is less than 1 mm per day...
The production of dairy and beef is important for food security and the economies of the U.S. Caribbean. The dairy industry is the leading agricultural sector in Puerto Rico, contributing about 22% of the total agricultural income. Region-wide, beef and dairy production generate over 25,000 jobs and occupy more than 50,000 acres. In the U.S. Virgin Islands, cattle production has been declining in recent years due to higher insurance costs and natural disasters, while sheep and goat production has increased. Caribbean countries are particularly vulnerable to climate change due to their geography and economic capacity. Climate change is driving temperatures higher and the region is experiencing more frequent and intense...
The definition of desertification accepted in the ad hoc conference held by UNEP in Nairobi in 1977 and confirmed at the Earth Summit on Environment and Development held in Rio de Janeiro in 1992 is: ?arid, semi-arid and dry-subhumid land degradation?. There is no global long-term trend in any rainfall change over the period of instrumental record (c. 150 years), but there has been an increase of 0�5�C in global temperature over the past 100 years. This increase seems partly due to urbanization, as there is no evidence of it resulting from atmospheric pollution by CO2and other warming gases (SO2, NO2, CH4, CFH etc.). On the other hand, the thermal increase is uneven, increasing with latitudes above 40� N and S....
Categories: Publication;
Types: Citation,
Journal Citation;
Tags: Journal of Arid Environments,
arid lands,
bioclimatology,
desertization,
drought mitigation,
Private Well Supplemental Information: http://www.dnr.mo.gov/env/wrc/logmain/index.html Alternate Geometry: SW,SW,NE,27,45N,03E Dataset Reference Date: 2009-09-09 00:00:00.0 Min Depth: 0.0 Max Depth: 570.0 Depth Units: f
Categories: Physical Item
It is well understood that plant phenology is sensitive to climate, however it is not so clear exactly how climate change might alter the spatial and temporal patterns of vegetation phenology. Satellite remote sensing offers a unique vantage point from which to observe phenological cycles across large regions. Although ubiquitous, cycles of green-up and brown-down are complex and exhibit great variability across space and time. Herbivore species such as elk, moose, and deer depend on the availability of herbaceous plants and deciduous shrubs for forage. These vegetation types are most nutritious for herbivores from early season to peak green-up, so characterizing vegetation cycles, or phenology, over the long term...
Categories: Data;
Types: Citation;
Tags: Drought,
Drought, Fire and Extreme Weather,
MTBS,
Moderate Resolution Imaging Spectroradiometer,
National CASC,
Your Yukon is a weekly column about environmental issues and research, from Canada's Yukon. This column discusses how climate change, especially drought stress, may be affecting the boreal forest.--Includes text from publisher's website.
Categories: Data,
Publication;
Types: Citation,
Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: P2-Changes in Plant and Animal Species Due to Climate Change
|
|
