Shoreline hardening alters freshwater shoreline ecosystems

2016 ◽  
Vol 35 (3) ◽  
pp. 764-777 ◽  
Author(s):  
Stacey M. Wensink ◽  
Scott D. Tiegs
Keyword(s):  
2019 ◽  
Author(s):  
Kammie-Dominique A. Tavares ◽  
◽  
Charles H. Fletcher ◽  
Tiffany Anderson
Keyword(s):  

2017 ◽  
Vol 41 (S1) ◽  
pp. 101-113 ◽  
Author(s):  
J. Brooke Landry ◽  
Rebecca R. Golden

Abstract Submerged aquatic vegetation (SAV) is an ecologically and economically valuable component of coastal estuaries that acts as an early indicator of both degrading and improving water quality. This study aimed to determine if shoreline hardening, which is associated with increased population pressure and climate change, acts to degrade SAV habitat quality at the local scale. In situ comparisons of SAV beds adjacent to both natural and hardened shorelines in 24 subestuaries throughout the Chesapeake and Mid-Atlantic Coastal Bays indicated that shoreline hardening does impact adjacent SAV beds. Species diversity, evenness, and percent cover were significantly reduced in the presence of riprap revetment. A post hoc analysis also confirmed that SAV is locally affected by watershed land use associated with increased population pressure, though to a lesser degree than impacts observed from shoreline armoring. When observed over time, SAV recovery at the local level took approximately 3 to 4 years following storm impacts, and SAV adjacent to natural shorelines showed more resilience to storms than SAV adjacent to armored shorelines. The negative impacts of shoreline hardening and watershed development on SAV shown here will inform coastal zone management decisions as increasing coastal populations and sea level rise drive these practices.


2017 ◽  
Vol 40 (5) ◽  
pp. 1464-1486 ◽  
Author(s):  
Matthew S. Kornis ◽  
Denise Breitburg ◽  
Richard Balouskus ◽  
Donna M. Bilkovic ◽  
Lori A. Davias ◽  
...  

2017 ◽  
Vol 41 (S1) ◽  
pp. 207-222 ◽  
Author(s):  
Diann J. Prosser ◽  
Jessica L. Nagel ◽  
Shay Howlin ◽  
Paul R. Marbán ◽  
Daniel D. Day ◽  
...  

Abstract In many coastal regions throughout the world, there is increasing pressure to harden shorelines to protect human infrastructures against sea level rise, storm surge, and erosion. This study examines waterbird community integrity in relation to shoreline hardening and land use characteristics at three geospatial scales: (1) the shoreline scale characterized by seven shoreline types: bulkhead, riprap, developed, natural marsh, Phragmites-dominated marsh, sandy beach, and forest; (2) the local subestuary landscape scale including land up to 500 m inland of the shoreline; and (3) the watershed scale >500 m from the shoreline. From 2010 to 2014, we conducted waterbird surveys along the shoreline and open water within 21 subestuaries throughout the Chesapeake Bay during two seasons to encompass post-breeding shorebirds and colonial waterbirds in late summer and migrating and wintering waterfowl in late fall. We employed an Index of Waterbird Community Integrity (IWCI) derived from mean abundance of individual waterbird species and scores of six key species attributes describing each species’ sensitivity to human disturbance, and then used this index to characterize communities in each subestuary and season. IWCI scores ranged from 14.3 to 19.7. Multivariate regression model selection showed that the local shoreline scale had the strongest influence on IWCI scores. At this scale, percent coverage of bulkhead and Phragmites along shorelines were the strongest predictors of IWCI, both with negative relationships. Recursive partitioning revealed that when subestuary shoreline coverage exceeded thresholds of approximately 5% Phragmites or 8% bulkhead, IWCI scores decreased. Our results indicate that development at the shoreline scale has an important effect on waterbird community integrity, and that shoreline hardening and invasive Phragmites each have a negative effect on waterbirds using subestuarine systems.


2015 ◽  
Vol 13 (6) ◽  
pp. 301-307 ◽  
Author(s):  
Rachel K Gittman ◽  
F Joel Fodrie ◽  
Alyssa M Popowich ◽  
Danielle A Keller ◽  
John F Bruno ◽  
...  
Keyword(s):  

2019 ◽  
Vol 174 ◽  
pp. 71-91 ◽  
Author(s):  
Valentin Pillet ◽  
Virginie K.E. Duvat ◽  
Yann Krien ◽  
Raphaël Cécé ◽  
Gael Arnaud ◽  
...  

2019 ◽  
Vol 42 (3) ◽  
pp. 900-900
Author(s):  
Matthew S. Kornis ◽  
Donna M. Bilkovic ◽  
Lori A. Davias ◽  
Steve Giordano ◽  
Denise L. Breitburg

2002 ◽  
Author(s):  
Martin C. Miller ◽  
Greg D. Williams ◽  
Lohna K. O'Rourke ◽  
John A. Southard ◽  
Susan L. Blanton

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