MAV / WGCPO wetland sanctuary

FOR non-AGOL ACCOUNT HOLDERS, DOWNLOAD THIS GEOSPATIAL DATA HERE: https://gis-fws.opendata.arcgis.com/search?tags=lmvjv Sanctuary data are defined as a managed public land waterfowl impoundment boundaries that also include the area immediately adjacent to that hydrologic unit that was officially designated as closed to all waterfowl hunting or closed to all access during the waterfowl season. Data were acquired from numerous sources (primarily LMVJV partner agencies) and over a number of years. 5000m buffers were applied to all waterfowl sanctuary impoundment units to capture the area immediately adjacent to the aquatic habitat that waterfowl would likely use as they move around the sanctuary area. In the process of developing a wetland complex model for wetlands and winter waterfowl, the LMVJV acquired and processed a collection of waterfowl sanctuary across the Mississippi Alluvial Valley and West Gulf Coastal Plain / Ouachitas geographies of the southern US. We defined a wetland complex as an area of appropriate size for conservation planning with suitable water coverage and persistence, heterogeneity and structure of vegetation, energy density and quality, and sanctuary to provide all of the resources needed by ducks during a portion of the non-breeding period (late fall to early spring). Based on this definition, we developed three primary sub-models for those factors that we could measure geospatially. We developed sub-models for Wetland Type to capture water coverage and heterogeneity of vegetation, Sanctuary, and Energy. The three sub-models were combined into a final Wetland Complex model. The data provided here are NOT the sanctuary model derived in this process, but the on-the-ground waterfowl habitat designations relative to hunting access.非AGOL账户持有者，请在此下载此地理空间数据：https://gis-fws.opendata.arcgis.com/search?tags=lmvjv。保护区数据定义为受管理的公共土地水禽蓄水区边界，同时包含该水文单元的紧邻区域——该区域在水禽季被官方划定为全面禁止水禽狩猎或全面禁止进入的区域。本数据集历经多年，采集自多个来源（主要为LMVJV合作机构）。我们对所有水禽保护区蓄水区单元开展了5000米缓冲区分析，以覆盖水禽在保护区内活动时可能利用的水生栖息地紧邻区域。在为湿地与越冬水禽构建复合湿地模型的过程中，LMVJV采集并处理了美国南部密西西比冲积河谷、墨西哥湾西部沿海平原/沃希托山脉区域内的一系列水禽保护区数据。我们将复合湿地定义为具备以下特征、可用于保护规划的区域：拥有适宜的水域覆盖度与持水性、植被异质性与结构、能量密度与质量，以及能够为非繁殖期（晚秋至早春）的鸭类提供所需全部资源的保护区。基于此定义，我们针对可通过地理空间手段量化的上述因子构建了三大核心子模型，分别对应湿地类型、保护区与能量维度，其中湿地类型子模型用于表征水域覆盖特征与植被异质性。将上述三大子模型整合后，即可得到最终的复合湿地模型。此处提供的数据并非本研究中构建的保护区模型，而是基于狩猎准入规则划定的实地水禽栖息地标识。