Earthworm communities in long-term no-tillage systems and secondary forest fragments in Paraná, Southern Brazil.
Earthworm communities in long-term no-tillage systems and secondary forest fragments in Paraná, Southern Brazil.
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巴西南部巴拉那州长期免耕系统和次生林碎片中的蚯蚓群落。
DOI：
10.11646/zootaxa.5255.1.28
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发表时间：
2023
期刊：
影响因子：
0.9
通讯作者：
Dudas RT
中科院分区：
文献类型：
--
作者：
Dudas RT
巴西巴拉那州用于农业生产的面积约为600万公顷，其中79%采用免耕系统（NTS），这对当地人口产生了积极影响。此外，土壤的丰度和丰富度可能是有价值的土壤质量。本研究评估了长期免耕网站（NTS）和附近的次生大西洋森林（SF）片段的群落。采样于2018年6月和2019年5月使用定量热带土壤生物学和肥力手工分选方法（ISO-TSBF）进行，并在NTS和SF的Faxinal，Mauá da Serra和帕尔梅拉三个城市进行定性采样。11种，隶属于5科（本哈米科，舌鞘科，巨鞘科，八齿螺科，鼻螺科）被发现沿着7个本地物种（Glossoscolex sp.22、Glossoscolex sp.23、Fimoscolex sp.21、Fimoscolex sp.24、Fimoscolex sp.42、Andiorrhythinus duseni和Urobenus brasiliensis）和四种外来或世界性物种（Dichogaster gracilis、Amynthas gracilis、Metaphire californica和Pontoscolex corethrurus）。Faxinal和Mauá da Serra以世界性的P. corethrurus为主，而帕尔梅拉的Fimoscolex和Glossoscolex最丰富。属于Glossosocolex和Fimosocolex的6种是新的科学，必须加以描述。2018年发现了126个个体（NTS 76个，SF 50个），2019年只发现了112个个体（NTS 45个，SF 67个）。Faxinal的丰度最高（123个），NTS有76个，SF有47个。在Mauá da Serra观察到相同的模式（SF> NTS），而在帕尔梅拉总体上收集到的个体较少（38个）（NTS 24个，SF 14个）。2019年在Faxinal和SF Mauá da Serra的NTS只有/更多的外来/世界性物种，而在其他日期和地点，> 50%的样本是本地物种。总体而言，森林中的本地物种多于外来物种：2018年，本地物种占所有物种的75%以上，但在2019年，Faxinal和Mauá da Serra都有更多的外来物种（> 65%），而在帕尔梅拉，它们占50%的个体。2019年，Faxinal（3.2 g）和Mauá da Serra的NTS（1.7 g）森林地点的蚯蚓总生物量较高。总的来说，总生物量高于在SF网站比NTS。使用一个分类提供的免耕系统中的蝗虫种群，所有三个网站被认为有质量差的丰富度（ind m-2），而物种丰富度，他们被认为有中等（Faxinal和Mauá da Serra）和良好的质量（帕尔梅拉）。
The area destined for agricultural production in Paraná state in Brazil is~ 6 million hectares, of which 79% are under no-tillage systems (NTS) that can positively affect earthworm populations. Furthermore, earthworm abundance and richness can be valuable soil quality. This study assessed earthworm communities in long-term no-tillage sites (NTS) and nearby secondary Atlantic Forest (SF) fragments. Sampling was performed in June 2018 and May 2019 using the quantitative Tropical Soil Biology and Fertility handsorting method (ISO-TSBF), complemented by qualitative sampling in three municipalities: Faxinal, Mauá da Serra and Palmeira, in NTS and SF. Eleven earthworm species, belonging to five families (Benhamiidae, Glossoscolecidae, Megascolecidae, Ocnerodrilidae, and Rhinodrilidae) were found along with seven native species (Glossoscolex sp. 22, Glossoscolex sp. 23, Fimoscolex sp. 21, Fimoscolex sp. 24, Fimoscolex sp. 42, Andiorrhinus duseni and Urobenus brasiliensis) and four exotic or cosmopolitan species (Dichogaster gracilis, Amynthas gracilis, Metaphire californica and Pontoscolex corethrurus). The cosmopolitan P. corethrurus dominated Faxinal and Mauá da Serra, while in Palmeira Fimoscolex and Glossoscolex were the most abundant. Six species belonging to Glossoscolex and Fimoscolex were new to science and must be described. Overall, 239 individuals were found. In 2018 126 individuals were found (76 in NTS and 50 in SF) and in 2019, only 112 individuals were found (45 in NTS and 67 in SF). The highest earthworm abundance was in Faxinal (123 individuals), with 76 individuals in NTS and 47 in SF. In Mauá da Serra the same pattern was observed (SF> NTS), while in Palmeira in overall, fewer individuals (38) were collected (24 in NTS and 14 in SF). The NTS at Faxinal and SF Mauá da Serra in 2019 had only/more exotic/cosmopolitan species, while at the other dates and sites> 50% of the specimens sampled were native species. Overall, forests had more native species than exotics: in 2018, natives represented> 75% of all specimens, but in 2019 both Faxinal and Mauá da Serra had more exotic species (> 65%), while at Palmeira, they represented 50% of the individuals. Earthworm total biomass for forest sites was higher in Faxinal (3.2 g) and NTS in Mauá da Serra (1.7 g) in 2019. Overall, the total biomass was higher in SF sites than NTS. Using a classification available for earthworm populations in no-tillage systems, all three sites were considered to have poor quality in terms of abundance (ind m-2), while for species richness, they were considered to have moderate (Faxinal and Mauá da Serra) and good quality (Palmeira).