Filters: Tags: CentralMississippiRiverRegion (X) > partyWithName: Steve Crawford (X)
10 results (30ms)|
Filters
Date Range
Types Contacts
Tag Types Tag Schemes
|
The Checkered Madtom (Noturus flavater) is found in moderate to high gradient, clear, small to medium rivers with strong flow and uses deeper, quiet pools or backwaters of these streams. This type of habitat has been eliminated from part of its former range in the White River, Arkansas, due to dam construction.
The Central Mississippi River states contain the confluences of the Upper Mississippi River with the Ohio, Missouri, and Arkansas rivers. Alteration of these large rivers for transportation and flood control has substantially altered their ecological characteristics, eliminating natural floodplains, sandbars, and meanders, and impeding fish migration routes. Other major tributary rivers include the Tennessee, Cumberland, Kentucky, and Osage, all very large rivers in their own right. Large reservoirs are common in the landscape of this region and have increased recreational opportunities for sportfish as well as many other activities, but typically suffer from dissolved oxygen issues in both the reservoirs and in...
The Paddlefish (Polyodon spathula) has declined across its entire range due largely to loss of breeding habitat and overharvest, with much of it as illegal harvesting for caviar. Although conservation efforts have stabilized this species in the Central Mississippi States, a continued decline is expected due to overharvest, introduced species (particularly Asian Carp), and pollution. Other threats include channelization and dam construction that have blocked seasonal migration to suitable spawning sites which isolates individual populations and lead to breeding issues. Some characteristics of its life history, such as length of time to reach sexual maturity, make it susceptible to decline and slow to recover.
There are nine large dams on the 652-mile (1,049-kilometer) Tennessee River. There are another 23 large dams on the tributaries to the Tennessee River. Protected areas in the region ensure the recovery of endangered and threatened species of animals and plants, including the Longnose Darter, Ozark Cavefish, and Ozark Cave Crayfish. Six large reservoirs were created by dams in the White River Basin, Arkansas, from 1911 through 1960 and required the displacement of a large number of people. Nearly 400 people in Baxter County, Arkansas, were displaced to make way for the reservoir created by the Norfork Dam. The town of Forsyth, Missouri, was relocated in its entirety to a spot 2 miles (3.2 kilometers) from its previous...
A. Pervasive disturbances: The most common disturbances based on total stream length in a given region. Top five overall most pervasive disturbances to all stream reaches, regardless of stream size and across all spatial scales (ranked highest first): Impervious surface cover Pasture and hay land use Population density Road density Low intensity urban land use Top three most pervasive disturbances to creeks (<100 km 2 watersheds) across all spatial scales : Impervious surface cover Population density Road density Top three most pervasive disturbances to rivers (>100 km 2 watersheds) across all spatial scales : Pasture and hay land use Upstream dam density Mine density. Top five most pervasive disturbances...
The Ozark Cavefish (Amblyopsis rosea) is found in specific cave systems with clean flowing groundwater. These systems suffer from human use of and (or) alterations to the cave systems. Recreational cavers can damage the cave ecosystem or interrupt breeding, causing this species to leave the cave, unlikely to return. Some caves have been flooded by the creation of reservoirs or have dried up because of lowered water tables from excessive groundwater pumping or water diversion.
Partnerships - Reservoir Fisheries Habitat Partnership, Southeast Aquatic Resources Partnership, and Fishers and Farmers Partnership Partners improved 10 miles shoreline and 150 acres of cove habitat in Arkansas. Cooperators planted and protected about 22,000 native plants, removed 8,000 acres of invasive plants, and constructed 60 brush or rock piles in Arkansas reservoirs. Provided improvement for 1,875 feet of reservoir shoreline habitat in Missouri. Funded efforts to install 30 brush piles in Mozingo Lake, Missouri. Worked with farmers in the Peno Creek Watershed, Missouri to develop innovative practices that benefited both natural resources and farmers. For more about specific waters and projects the Central...
Kentucky and Missouri rank in the top five states in the number of farms. Cattle and poultry are the most common livestock in the region and corn, soybeans, cotton, tobacco, and rice are among the most frequently grown crops. Rice farming is the dominant agriculture in southeast Missouri and northeastern Arkansas, an area of high risk of stream degradation. Nearly 66 percent of Missouri is farmed and north Missouri, another high risk area, is predominately cattle farms, row crops, and hay fields. Cattle farms account for increased risk of habitat degradation in central and east Tennessee as well as Southern Kentucky. Runoff from agricultural fields carries sediment, fertilizers, and pesticides into tributaries...
The Ozark Shiner (Notropis ozarcanus) requires creeks and small rivers with gravel or rocky bottoms and strong, permanent flow. The Ozark Shiner has disappeared from many stream reaches that are below impoundments and receive cold-water releases. These dams and reservoirs also serve as barriers that prevent colonization of suitable habitat. Increases in turbidity, siltation from land practices, gravel removal operations, and nutrient enrichment from poultry and swine farms are additional threats to this unique minnow species.
Regional industries have contributed significant amounts of oil, metals, and other industrial wastes such as sulfur dioxide, hydrogen sulfide, and benzene to the Mississippi River. Imperiled waters abound in Missouri and metals such as lead, zinc, and cadmium were historically released into streams from mines in multiple counties, particularly in the old lead mining belts. Over 1,321 miles of Tennessee rivers and streams, 1,507 miles in Kentucky, and 1,493 miles in Arkansas were impaired in 2012 due to release of metals, pesticides, and PCBs. Many chemicals, such as PCBs, have been banned for decades but persist in suspended and bottom sediments of aquatic environments. Poorly treated sewage and wastewater is also...
|
|
