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Frequency of extreme freeze events controls the distribution and structure of black mangroves (Avicennia germinans) near their northern range limit in coastal Louisiana Aim Climate change is expected to result in the tropicalization of coastal wetlands in the northern Gulf of Mexico, as warming winters allow tropical mangrove forests to expand their distribution poleward at the expense of temperate salt marshes. Data limitations near mangrove range limits have hindered understanding of the effects of winter temperature extremes on mangrove distribution and structure. Here, we investigated the influence of extreme freeze events on the abundance, height and coverage of black mangroves (Avicennia germinans ) near their northern range limit in Louisiana. Location Coastal Louisiana, USA. Methods We quantified the relationships between the frequency of extreme freeze events and A. germinans... Categories: Publication; Types: Citation Rapidly changing range limits in a warming world: Critical data limitations and knowledge gaps for advancing understanding of mangrove range dynamics in the Southeastern USA Abstract (from Springer): Climate change is altering species’ range limits and transforming ecosystems. For example, warming temperatures are leading to the range expansion of tropical, cold-sensitive species at the expense of their cold-tolerant counterparts. In some temperate and subtropical coastal wetlands, warming winters are enabling mangrove forest encroachment into salt marsh, which is a major regime shift that has significant ecological and societal ramifications. Here, we synthesized existing data and expert knowledge to assess the distribution of mangroves near rapidly changing range limits in the southeastern USA. We used expert elicitation to identify data limitations and highlight knowledge gaps for... Categories: Publication; Types: Citation U.S. Gulf of Mexico coast (TX, MS, AL, and FL) Macroclimate Landscape and Climate Data (2013-2014) The northern Gulf of Mexico coast spans two major climate gradients and represents an excellent natural laboratory for developing climate-influenced ecological models. In this project, we used these zones of remarkable transition to develop macroclimate-based models for quantifying the regional responses of coastal wetland ecosystems to climate variation. In addition to providing important fish and wildlife habitat and supporting coastal food webs, these coastal wetlands provide many ecosystem goods and services including clean water, stable coastlines, food, recreational opportunities, and stored carbon. Our objective was to examine and forecast the effects of macroclimatic drivers on wetland ecosystem structure... Categories: Data; Types: Citation; Tags: Corpus Christi, Galveston, Grand Bay, Gulf of Mexico, Laguna Madre, All tags... Port Aransas, San Antonio, Sea-Level Rise and Coasts, Slidell, South Central CASC, State of Alabama, State of Florida, State of Louisiana, State of Mississippi, State of Texas, Tampa Bay, Ten Thousand Islands, Water, Coasts and Ice, Weeks Bay, Wetlands, climate, climate, elevation, elevation, landscape, landscape, latitude, latitude, longitude, longitude, Fewer tags U.S. Gulf of Mexico coast (TX, MS, AL, and FL) Macroclimate Vegetation Data Section 1 (2013-2014) The northern Gulf of Mexico coast spans two major climate gradients and represents an excellent natural laboratory for developing climate-influenced ecological models. In this project, we used these zones of remarkable transition to develop macroclimate-based models for quantifying the regional responses of coastal wetland ecosystems to climate variation. In addition to providing important fish and wildlife habitat and supporting coastal food webs, these coastal wetlands provide many ecosystem goods and services including clean water, stable coastlines, food, recreational opportunities, and stored carbon. Our objective was to examine and forecast the effects of macroclimatic drivers on wetland ecosystem structure... Categories: Data; Types: Citation; Tags: Corpus Christi, Galveston, Grand Bay, Gulf of Mexico, Laguna Madre, All tags... Port Aransas, San Antonio, Sea-Level Rise and Coasts, Slidell, South Central CASC, State of Alabama, State of Florida, State of Louisiana, State of Mississippi, State of Texas, Tampa Bay, Ten Thousand Islands, Water, Coasts and Ice, Weeks Bay, Wetlands, environment, vegetation, vegetation, Fewer tags U.S. Gulf of Mexico coast (TX, MS, AL, and FL) Macroclimate Soil Data (2013-2014) The northern Gulf of Mexico coast spans two major climate gradients and represents an excellent natural laboratory for developing climate-influenced ecological models. In this project, we used these zones of remarkable transition to develop macroclimate-based models for quantifying the regional responses of coastal wetland ecosystems to climate variation. In addition to providing important fish and wildlife habitat and supporting coastal food webs, these coastal wetlands provide many ecosystem goods and services including clean water, stable coastlines, food, recreational opportunities, and stored carbon. Our objective was to examine and forecast the effects of macroclimatic drivers on wetland ecosystem structure... Categories: Data; Types: Citation; Tags: Corpus Christi, Galveston, Grand Bay, Gulf of Mexico, Laguna Madre, All tags... Port Aransas, San Antonio, Sea-Level Rise and Coasts, Slidell, South Central CASC, State of Alabama, State of Florida, State of Louisiana, State of Mississippi, State of Texas, Tampa Bay, Ten Thousand Islands, Water, Coasts and Ice, Weeks Bay, Wetlands, bulk density, bulk density, environment, environment, moisture, soil, soil, soil organic matter, soil organic matter, Fewer tags Barrier island habitat map and vegetation survey, Dauphin Island, AL, 2015 This dataset includes barrier island land cover types collected from mid-November 2015 to mid-December 2015 along randomly placed transects at seven sites throughout the east end of Dauphin Island. Specifically, this data collection included characterizing land cover types and measuring horizontal position and elevation. We characterized plant community composition and structure for a subset of these points (see Vegetation Survey Data Table). This work was conducted through a joint effort by the State of Alabama, the U.S. Geological Survey, and the U.S. Army Corps of Engineers to evaluate the feasibility of various restoration alternatives and how specific alternatives might increase the resiliency and sustainability... Types: Citation; Tags: Alabama, Dauphin Island, Gulf of Mexico, Mississippi Sound, Mobile Bay, All tags... USGS Science Data Catalog (SDC), barrier island, beach, biota, coastal dune, coastal wetland, elevation, environment, mapping, mobile county, vegetation community, Fewer tags Salt marsh-mangrove ecotones: using structural gradients to investigate the effects of woody plant encroachment on plant-soil interactions and ecosystem carbon pools Abstract (from http://onlinelibrary.wiley.com/doi/10.1111/1365-2745.12571/full): 1.Changing winter climate extremes are expected to result in the poleward migration of mangrove forests at the expense of salt marshes. Although mangroves and marshes are both highly valued ecosystems, the ecological implications of mangrove expansion have not been fully investigated. 2.Here we examined the effects of mangrove expansion on below-ground properties related to peat development and carbon storage. We investigated plant-soil interactions in marshes and across mangrove forest structural gradients in three locations in the northern Gulf of Mexico (USA). We compared our results to those from terrestrial grasslands where the... Categories: Publication; Types: Citation; Tags: Forests, Grasslands and Plains, Landscapes, Sea-Level Rise and Coasts, Southeast CASC, All tags... Water, Coasts and Ice, Wetlands, carbon storage, climate change, ecotone, forest development, mangrove forest, plant soil (below-ground) interactions, range expansion, salt marsh, soil development, woody plant encroachment, Fewer tags Temperature Thresholds for Black Mangrove (Avicennia germinans) Freeze Damage, Mortality, and Recovery in North America: Refining Tipping Points for Range Expansion in a Warming Climate Abstract (from British Ecological Society): Near the tropical‐temperate transition zone, warming winter temperatures are expected to facilitate the poleward range expansion of freeze‐sensitive tropical organisms. In coastal wetlands of eastern and central North America, freeze‐sensitive woody plants (mangroves) are expected to expand northward into regions currently dominated by freeze‐tolerant herbaceous salt marsh plants. To advance understanding of mangrove range expansion, there is a need to refine temperature thresholds for mangrove freeze damage, mortality, and recovery. We integrated data from 38 sites spread across the mangrove range edge in the Gulf of Mexico and Atlantic coasts of North America, including... Categories: Publication; Types: Citation; Tags: Southeast CASC, Water, Coasts and Ice, Wetlands