干旱区生态环境知识资源中心(Arid): Impact of 25 years of grazing on the forest structure of Pinus cembroides in northeast Mexico

Arid

DOI	10.1016/j.actao.2021.103743
	Impact of 25 years of grazing on the forest structure of Pinus cembroides in northeast Mexico
	Arevalo, Jose Ramon; Encina-Dominguez, Juan A.; Mellado, Miguel; Garcia-Martinez, Jose E.; Cruz-Anaya, Arturo
通讯作者	Arevalo, JR (corresponding author), Univ La Laguna, Dept Bot Ecol & Plant Physiol, San Cristobal la Laguna, Islas Canarias, Spain.
来源期刊	ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
ISSN	1146-609X
EISSN	1873-6238
出版年	2021
卷号	111
英文摘要	Increases or decreases in grazing cause significant disturbances in natural and managed forests. Indeed, grazing impacts can be on par with habitat destruction, exotic species invasion and fire. Grazing can produce changes in the diversity of native and exotic species as well as in functional plant groups at community and ecosystem levels. Unfortunately, overgrazing is a common occurrence in many plant communities, increasing erosion risks, land degradation and plant invasion. We analyze and quantify the effects of grazing by goats as well as cattle and horses on forest structure and spatial distribution of a dominant tree species (Pinus cembroides) in Coahuila, Mexico, an area affected by overgrazing and with problems of desertification. We also assess the influence of other forest variables that may be affected by cattle grazing, such as infestation by Tillandsia recurvata (an atmospheric epiphytic bromeliad) on P. cembroides. The study site is a protected area of 45,000 ha in the Sierra of Zapaliname (Coahuila, Mexico). In this area, grazing is considered a traditional and essential activity as the local economy depends on it. Eight plots (900 m(2)) 100 m apart were set up over a control site that had been grazed by cattle and equines for at least the last 100 years, while another eight plots (also 100 m apart) were established in an area that had excluded grazing for 25 years. Tree species composition and forest structure were analyzed in the plots, as well as other relevant variables, like T. recurvata infestation. The number of tree species (DBH>2.5 cm) differed significantly in control (6) vs. exclusion areas (11), with higher values in the latter. In addition, infestation of T. recurvata was found to be significatively higher in plots where grazing occurred. Spatial analysis of the tree distribution did not reveal any specific patterns related to either grazed or exclusion areas, and neither were there significant differences in species composition. For saplings (>50 cm high and <2.5 cm DBH), five species were present in exclusion plots, while there were only three in control ones. Regarding seedlings (<50 cm high), three species were present in both exclusion and control plots. Our findings suggest that grazing may have modified species richness and made the tree population more vulnerable to parasitic plants, as shown by the higher infestation levels. Also, tree regeneration has been negatively affected, reducing the number of species. We suggest a reduction in grazing pressure and more restrictive grazing management for the forest site as a way of maintaining landscape use, cultural values, and biodiversity.
英文关键词	Conservation Diversity Forest ecology Grazing Plant communities
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000667166300021
WOS关键词	NATURAL REGENERATION ; SPATIAL PATTERNS ; LAUREL FOREST ; HERBIVORES ; TREE ; CATTLE ; DIVERSITY ; DYNAMICS ; CONSERVATION ; REPLACEMENT
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362307
作者单位	[Arevalo, Jose Ramon] Univ La Laguna, Dept Bot Ecol & Plant Physiol, San Cristobal la Laguna, Islas Canarias, Spain; [Encina-Dominguez, Juan A.] Autonomous Agr Univ Antonio Narro, Dept Nat Resources, Saltillo, Coahuila, Mexico; [Mellado, Miguel; Garcia-Martinez, Jose E.] Autonomous Agr Univ Antonio Narro, Dept Anim Nutr, Saltillo, Coahuila, Mexico; [Cruz-Anaya, Arturo] Nat Protected Area Sierra Zapaliname, Saltillo, Coahuila, Mexico
推荐引用方式 GB/T 7714	Arevalo, Jose Ramon,Encina-Dominguez, Juan A.,Mellado, Miguel,et al. Impact of 25 years of grazing on the forest structure of Pinus cembroides in northeast Mexico[J],2021,111.
APA	Arevalo, Jose Ramon,Encina-Dominguez, Juan A.,Mellado, Miguel,Garcia-Martinez, Jose E.,&Cruz-Anaya, Arturo.(2021).Impact of 25 years of grazing on the forest structure of Pinus cembroides in northeast Mexico.ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,111.
MLA	Arevalo, Jose Ramon,et al."Impact of 25 years of grazing on the forest structure of Pinus cembroides in northeast Mexico".ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 111(2021).