AKEPIC_Data_Positive_Records

ACCS tracks all non-native plants known to occur in Alaska. In addition, ACCS has compiled biographies for over half of the 400 non-native plant species that are known or likely to occur in Alaska. In collaboration with biologists, land managers, and weed scientists across the state, ACCS has developed an invasive plant ranking system that helps evaluate the potential invasiveness and impacts of non-native plants to natural areas in Alaska (Carlson et al. 2008). With funding support from the U.S. Forest Service, the Alaska Association of Conservation Districts, and the University of Alaska, we have ranked approximately 170 non-native plant species to date. The AKEPIC_Data_Positive_Records is a dataset displaying only positive occurrences from the AKEPIC dataset. This will display the best available data on current infestations only. For example, Elodea sp. occurred in Sports Lake on the Kenai Peninsula prior to 2017 but was eradicated with herbicide. A follow up survey in 2018 and 2019 did not find Elodea sp. in the lake. The updated negative occurrences overlay the old positive occurrences, displaying the lake as negative. Therefore, neither the positive nor negative data from this lake are included in this dataset since the lake no longer has positive infestation records. Another example, professionals surveyed Whiskey Lake and did not find Elodea resulting in a negative occurrence. This survey effort would not be included in this dataset. Contact for AKEPIC For questions or comments related to the AKEPIC project, procedures for collecting or submitting presence/absence data, or non-native plant identification or systematics, please contact Justin Fulkerson (primary contact).ACCS 全程监测并记录了已知在阿拉斯加自然环境中出现的所有非本土植物。此外，针对已知或可能在阿拉斯加出现的400种非本土植物，ACCS已为其中半数以上汇编了物种生物学档案资料。本团队与全州范围内的生物学家、土地管理者及杂草科学家合作，开发了一套入侵植物分级体系，可用于评估非本土植物对阿拉斯加自然区域的潜在入侵性及其造成的影响（Carlson等，2008）。我们依托美国林务局、阿拉斯加保护地区协会以及阿拉斯加大学的资助，截至目前已对约170种非本土植物完成了分级评级。 AKEPIC_Data_Positive_Records 是仅展示AKEPIC数据集内阳性存在记录的数据集，仅呈现当前已知入侵发生情况的最优可用数据。例如，2017年前基奈半岛的运动湖（Sports Lake）曾记录伊乐藻属（Elodea sp.）植物种群，后通过除草剂完成根除。2018年与2019年的后续调查未在该湖中再次发现伊乐藻属植物，更新后的阴性记录覆盖了原有的阳性记录，将该湖标记为阴性。因此，由于该湖目前已无阳性入侵记录，其相关的阳性与阴性数据均未纳入本数据集。另一个案例为，专业人员对威士忌湖（Whiskey Lake）开展调查后未发现伊乐藻属植物，形成了阴性记录，但此次调查工作并未纳入本数据集。 AKEPIC 项目联系方式 若您有关于AKEPIC项目、数据采集或提交存在/缺失记录的流程，或非本土植物鉴定与分类学相关的问题或意见，请联系贾斯汀·富尔克森（Justin Fulkerson，主要联系人）。