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Seascape modeling of southern giant petrels from Patagonia during different life-cycles

机译：不同生命周期中巴塔哥尼亚南部海燕的海景建模

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Presence-only models such as Ecological Niche Factor Analysis (ENFA) compare distributions of environmental variables and species, generating habitat suitability (HS) maps. Here, we determined the factors affecting distribution of southern giant petrels (SGP) from northern Patagonian colonies (Isla Arce: 45 degrees 00'S; 65 degrees 29'W, and Isla Gran Robredo: 45 degrees 08'S; 66 degrees 03'W) using ENFA, improving estimates of their potential year-round feeding habitats. Data on movements of 17 adult and 9 first-year juvenile SGP were gathered using satellite telemetry. Model ecogeographical variables (EGV) overlapped the tracked animals. The resulting HS maps included most of the tracking locations along the Argentinean Shelf and reflected characteristics that congregate procellariiformes elsewhere. Wind conditions and primary productivity shaped foraging HS of petrels over the year. However, different EGVs influenced this population differently depending on the requirements of their life stage. For example, juveniles showed high marginality ( values of EGVs different from the mean values available). Breeding adults' HS was determined by a small range of values within those available, showing high specializations. Contrarily, wintering petrels showed
机译：仅存在模型（例如生态位因子分析（ENFA））比较环境变量和物种的分布，从而生成栖息地适宜性（HS）图。在这里，我们使用ENFA确定了影响北巴塔哥尼亚殖民地（Isla Arce：45度00'S; 65度29'W和Isla Gran Robredo：45度08'S; 66度03'W）的南部巨海鸥（SGP）分布的因素。 ，提高了对它们全年可能觅食生境的估计。使用卫星遥测收集了17名成人和9名第一年大学生SGP的运动数据。模型生态地理变量（EGV）与被跟踪的动物重叠。生成的HS地图包括沿阿根廷架的大多数跟踪位置，并反映了聚集其他地方的原形目的特征。一年中，风力条件和初级生产力决定了海燕的觅食HS。但是，不同的EGV对其生命周期的要求不同，对人口的影响也不同。例如，少年显示出较高的边缘性（EGV的值与可用平均值不同）。成年人的HS值是由现有值中的一小部分值确定的，这表明其专业性很高。相反，越冬海燕显示

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