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61.
de Paula FR Ferraz SF Gerhard P Vettorazzi CA Ferreira A 《Environmental management》2011,48(4):750-763
Riparian forests are important for the structure and functioning of stream ecosystems, providing structural components such
as large woody debris (LWD). Changes in these forests will cause modifications in the LWD input to streams, affecting their
structure. In order to assess the influence of riparian forests changes in LWD supply, 15 catchments (third and fourth order)
with riparian forests at different conservation levels were selected for sampling. In each catchment we quantified the abundance,
volume and diameter of LWD in stream channels; the number, area and volume of pools formed by LWD and basal area and tree
diameter of riparian forest. We found that riparian forests were at a secondary successional stage with predominantly young
trees (diameter at breast height <10 cm) in all studied streams. Results showed that basal area and diameter of riparian forest
differed between the stream groups (forested and non-forested), but tree density did not differ between groups. Differences
were also observed in LWD abundance, volume, frequency of LWD pools with subunits and area and volume of LWD pools. LWD diameter,
LWD that form pools diameter and frequency of LWD pools without subunits did not differ between stream groups. Regression
analyses showed that LWD abundance and volume, and frequency of LWD pools (with and without subunits) were positively related
with the proportion of riparian forest. LWD diameter was not correlated to riparian tree diameter. The frequency of LWD pools
was correlated to the abundance and volume of LWD, but characteristics of these pools (area and volume) were not correlated
to the diameter of LWD that formed the pools. These results show that alterations in riparian forest cause modifications in
the LWD abundance and volume in the stream channel, affecting mainly the structural complexity of these ecosystems (reduction
in the number and structural characteristics of LWD pools). Our results also demonstrate that riparian forest conservation
actions must consider not only its extension, but also successional stage to guarantee the quantity and quality of LWD necessary
to enable the structuring of stream channels. 相似文献
62.
Sehnem Simone Pereira Luis Henrique Junior Silvio Santos Bernardy Rógis Juarez Lara Ana Cláudia 《Journal of Material Cycles and Waste Management》2022,24(3):1020-1036
Journal of Material Cycles and Waste Management - Food waste is a serious problem worldwide. There is a lot of waste in the food sector, while we still have a significant percentage of people who... 相似文献
63.
Canhada João C. S. Paiva Fábio F. G. Shinohara Gabriel M. M. Okimoto Fernando Hiranobe Carlos T. Teixeira Silvio R. Job Aldo E. Santos Renivaldo J. 《Journal of Material Cycles and Waste Management》2023,25(2):944-953
Journal of Material Cycles and Waste Management - Leather production is a technology that boosts the economy because of its versatility and durability. However, the wastes generated throughout the... 相似文献