caa a22 4500 46579257X CHVBK 20180323112029.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.2307/1351918 doi (NATIONALLICENCE)springer-10.2307/1351918 Relationships between wetland fragmentation and recent hydrologic changes in a Deltaic Coast [Elektronische Daten] [R. Turner, Yeleswarapu Rao] Patterns in coastal wetland loss in the northern Gulf of Mexico were examined using aerial imagery from 1955-56 and 1978. Five qualitative types of wetland changes are evident: (1) spoil bank-parallel pond formation, (2) pond formation with apparent random distribution for the smallest ponds, but very clumped distribution for larger ponds, (3) semi- or complete impoundment resulting in open water formation, (4) cutting off of stream channels upstream of where a spoil bank crosses a natural channel, and (5) erosion at the land-water interface. Only ponds <20 ha formed and disappeared in the interval, and it is clear that wetland breakup, not erosion at the pond-lake edge, is the dominant form of wetland-to-open water conversion. Canals and their spoil banks are spatially related to wetland-to-water conversion which is evident up to 2 km away from those man-made features. The indirect impacts of canals and spoil banks vary regionally, for example, with sediment compaction rates that increase with increasing sediment deposition. These results are consistent with the hypothesis that canals and spoil banks are a major factor driving wetland loss rates because they change wetland hydrology. Estuarine Research Federation, 1990 Turner R. Coastal Ecology Institute Center for Wetland Resources, Louisiana State University, 70803, Baton Rouge, Louisiana aut Rao Yeleswarapu Department of Computer Sciences, Louisiana State University, 70803, Baton Rouge, Louisiana aut Estuaries Springer-Verlag 13/3(1990-09-01), 272-281 0160-8347 13:3<272 1990 13 12237 https://doi.org/10.2307/1351918 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.2307/1351918 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Turner R. Coastal Ecology Institute Center for Wetland Resources, Louisiana State University, 70803, Baton Rouge, Louisiana aut NATIONALLICENCE 700 1- Rao Yeleswarapu Department of Computer Sciences, Louisiana State University, 70803, Baton Rouge, Louisiana aut NATIONALLICENCE 773 0- Estuaries Springer-Verlag 13/3(1990-09-01), 272-281 0160-8347 13:3<272 1990 13 12237 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer