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Update on the Desecheo Island Flora
Caribbean Journal of Science ( IF 0.4 ) Pub Date : 2019-10-01 , DOI: 10.18475/cjos.v49i2.a18
Juan G. García-Cancel 1 , Kirsty Swinnerton 1 , Ricardo Albarracín 2 , Armando Feliciano 2 , Cielo E. Figuerola-Hernández 1 , Susan Silander 3
Affiliation  

The introduction of non-native organisms has caused changes in island ecosystems world-wide. Two of the main drivers of island extinctions and ecosystem changes are goats and black rats. These organisms alter considerably the flora of island ecosystems by limiting propagule production and dispersal as well as constant herbivory. Even so, island floras can still be diverse if human contact is limited and removal of non-native organisms is carried out. This can start regeneration of the damaged ecosystem and begin the process of ecosystem restoration. The goal of our research was to update the flora of the island from the last 16 or more years. Plants were opportunistically observed, and some collected along trails, ridges, coastal areas, and in the most accessible valleys where other restoration efforts were taking place. Each collected plant was identified in the field, photographed, described, and its GPS coordinates were recorded. A total of 69 species were observed in the field, 17 of which were collected and vouchered in the UPR-Mayagüez Herbarium. Populations of some native plants, such as Harrisia portoricensis Britton (Cactaceae) seemed to be abundant while others, such as the Mammillaria nivosa Link. (Cactaceae) were found in marginal areas with a highly-restricted population. New populations of previously unknown non-natives Spathodea campanulata P. Beauv. (Bignoniaceae), Cenchrus ciliaris L. (Poaceae), and Leucaena leucocephala (Lam.) de Wit (Fabaceae) in Desecheo are of conservation concern. Control or quick removal of these invasive species would help the restoration process of the island.

中文翻译:

Desecheo岛植物群更新

外来生物的引进已引起全世界岛屿生态系统的变化。岛屿灭绝和生态系统变化的两个主要驱动因素是山羊和黑老鼠。这些生物通过限制繁殖体的繁殖和扩散以及恒定的食草性,大大改变了岛屿生态系统的植物区系。即使这样,如果人类的接触受到限制并且非本地生物被清除,岛上的植物群仍然可以是多样的。这可以开始受损生态系统的再生,并开始生态系统的恢复过程。我们研究的目标是在过去16年或以上的时间里更新该岛的植物区系。有人偶然地观察到了植物,并沿着步道,山脊,沿海地区以及进行其他修复工作的最容易接近的山谷收集了一些植物。在田野中识别出每种收集的植物,进行拍照,描述,并记录其GPS坐标。在野外共观察到69种,其中的17种已在UPR-Mayagüez植物标本室收集并作了凭证。一些本地植物的种群,例如哈里西亚波多黎各不列颠(仙人掌科)似乎很丰富,而其他物种,例如黑夜病菌(Mammillaria nivosa Link),则很丰富。(仙人掌科)被发现在人口高度受限的边缘地区。以前未知的非本地人Spathodea campanulata P. Beauv的新种群。(Bignoniaceae),Cenchrus ciliaris L.(Poaceae)和Desecheo的Leucaena leucocephala(Lam。)de Wit(Fabaceae)具有保护意义。控制或迅速清除这些入侵物种将有助于岛屿的恢复进程。并记录其GPS坐标。在野外共观察到69种,其中的17种已在UPR-Mayagüez植物标本室收集并作了凭证。一些本地植物的种群,例如哈里西亚波多黎各不列颠(仙人掌科)似乎很丰富,而其他物种,例如黑夜病菌(Mammillaria nivosa Link),则很丰富。(仙人掌科)被发现在人口高度受限的边缘地区。以前未知的非本地人Spathodea campanulata P. Beauv的新种群。(Bignoniaceae),Cenchrus ciliaris L.(Poaceae)和Desecheo的Leucaena leucocephala(Lam。)de Wit(Fabaceae)具有保护意义。控制或迅速清除这些入侵物种将有助于岛屿的恢复进程。并记录其GPS坐标。在野外共观察到69种,其中的17种已在UPR-Mayagüez植物标本室收集并作了凭证。一些本地植物的种群,例如哈里西亚波多黎各不列颠(仙人掌科)似乎很丰富,而其他物种,例如黑夜病菌(Mammillaria nivosa Link),则很丰富。(仙人掌科)被发现在人口高度受限的边缘地区。以前未知的非本地人Spathodea campanulata P. Beauv的新种群。(Bignoniaceae),Cenchrus ciliaris L.(Poaceae)和Desecheo的Leucaena leucocephala(Lam。)de Wit(Fabaceae)具有保护意义。控制或迅速清除这些入侵物种将有助于岛屿的恢复进程。其中的17份已在普遍定期审议的Mayagüez植物标本室中收集和使用。一些本地植物的种群,例如哈里西亚波多黎各不列颠(仙人掌科)似乎很丰富,而其他物种,例如黑夜病菌(Mammillaria nivosa Link),则人口众多。(仙人掌科)被发现在人口高度受限的边缘地区。以前未知的非本地人Spathodea campanulata P. Beauv的新种群。(Bignoniaceae),Cenchrus ciliaris L.(Poaceae)和Desecheo的Leucaena leucocephala(Lam。)de Wit(Fabaceae)具有保护意义。控制或迅速清除这些入侵物种将有助于岛屿的恢复进程。其中的17份已在普遍定期审议的Mayagüez植物标本室中收集和使用。一些本地植物的种群,例如哈里西亚波多黎各不列颠(仙人掌科)似乎很丰富,而其他物种,例如黑夜病菌(Mammillaria nivosa Link),则很丰富。(仙人掌科)被发现在人口高度受限的边缘地区。以前未知的非本地人Spathodea campanulata P. Beauv的新种群。(Bignoniaceae),Cenchrus ciliaris L.(Poaceae)和Desecheo的Leucaena leucocephala(Lam。)de Wit(Fabaceae)具有保护意义。控制或迅速清除这些入侵物种将有助于岛屿的恢复进程。(仙人掌科)被发现在人口高度受限的边缘地区。以前未知的非本地人Spathodea campanulata P. Beauv的新种群。(Bignoniaceae),Cenchrus ciliaris L.(Poaceae)和Desecheo的Leucaena leucocephala(Lam。)de Wit(Fabaceae)具有保护意义。控制或迅速清除这些入侵物种将有助于岛屿的恢复进程。(仙人掌科)被发现在人口高度受限的边缘地区。以前未知的非本地人Spathodea campanulata P. Beauv的新种群。(Bignoniaceae),Cenchrus ciliaris L.(Poaceae)和Desecheo的Leucaena leucocephala(Lam。)de Wit(Fabaceae)具有保护意义。控制或迅速清除这些入侵物种将有助于岛屿的恢复进程。
更新日期:2019-10-01
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