Negative effects of exotic pine invasion on macroinvertebrate communities in southern Brazil coastal ponds

Abstract

Exotic pine invasion influences native wetland assemblages by changing environmental conditions such as hydrological regime and physicochemical characteristics. The expansion of cultivated pine has been a concern in southern Brazil and its impacts on aquatic biodiversity are poorly known. We tested the hypotheses that: (1) pine invasion decreases aquatic macroinvertebrate richness and abundance, modifying composition and macroinvertebrate functional feeding groups in ponds; and (2) β-diversity between natural and pine ponds is determined mainly by species nestedness. Five ponds in native grassland and five in a pine-planted matrix were sampled seven times from 2007 to 2009. The pine ponds had reduced macroinvertebrate richness and abundance, and different taxa and functional feeding groups. Comparing ponds in natural and cultivated pine areas, β-diversity as determined by nestedness did not differ from the value resulting from the turnover. Reduction of surface in ponds in pine areas may be one of the main causes for the lower macroinvertebrate richness and abundance because many taxa do not have adaptations to tolerate or escape the dry phase. Our results suggest that pine invasion has a negative impact on macroinvertebrate structure in southern Brazil coastal ponds.

Abundance, Sex-Ratio, Length–Weight Relation, and Condition Factor of Non-Annual Killifish <I>Atlantirivulus Riograndensis</I> (Actinopterygii: Cyprinodontiformes: Rivulidae) in Lagoa Do Peixe National Park, a Ramsar Site of Southern Brazil

“…In southern Brazil, 90% of the wetland systems have already been lost mainly due to agriculture, and the remaining ones are still at high risk due to the expansion of rice fields and exotic Eucalyptus and pine plantation . Studies conducted in wetlands of LPNP have shown that pine plantation changed the hydroperiod of wetlands causing a negative effect on macrophytes (Rolon et al 2011), macroinvertebrates (Stenert et al 2012), amphibians (Machado et al 2012), and probably on rivulid populations.…”

Perspectives of plantation forests in the sustainable forest development of China

“…For example, even-aged and monoculture plantations over the successive rotations can result in loss of soil nutrients and suitable habitats for taxa living in natural forests (Ma et al 2000, Lin et al 2001, Erskine et al 2006, Larjavaara 2008, Chen et al 2009, Hartmann et al 2010, Xu 2011, Liao et al 2012, Zhou et al 2015. Also, these forest stands may alter soil physiochemical, biological properties, and affect water resources (Scott 2005, Stenert et al 2012. In a study, Yang et al (1998) Perspectives of plantation forests in China chemical activities of total and rhizosphere soil in a plantation forest were largely affected compared to the natural forest of Castanopsis kauakamii in Xinkou, Sanming city, Fujian province, China.…”

Aportes a la identificación y cuantificación de las externalidades de la foresto industria: el caso de Puerto Piray (Misiones, Argentina)

“…Más aun, esto no es concordante con la evidencia empírica existente para la zona, considerando el nivel promedio de precipitaciones anuales (Keller et al, 2016). Sin embargo, en regiones donde se implantan especies con alto consumo de recursos hídricos (por ejemplo, pino caribaea) si se detectaron déficits hídricos derivados de las plantaciones forestales (Scott, 2005;Stenert, Bacca, Moraes, Avila y Maltchick, 2012). En este sentido, la relevancia del impacto de la actividad forestal sobre la disponibilidad de agua en la zona se pudo observar en el hecho que a partir del año 2014, según la empresa estatal Aguas de las Misiones SE, al menos dos compañías del sector forestal (incluida Arauco Argentina SA) han comenzado a pagar por el consumo de agua subterránea, aunque no por el uso que se detecta en los pinares sino por lo utilizado en sus respectivos aserraderos.…”