2026-04-17T19:39:29Zhttps://recercat.cat/oai/request

oai:recercat.cat:10459.1/690552024-12-05T21:45:48Zcom_2072_3622col_2072_479130

00925njm 22002777a 4500 dc Clavero Pineda, Miguel author Villero Pi, Daniel author Brotons, Lluís author 2020-06-18T11:14:06Z 2020-06-18T11:14:06Z 2011-04-21 Different components of global change can have interacting effects on biodiversity and this may influence our ability to detect the specific consequences of climate change through biodiversity indicators. Here, we analyze whether climate change indicators can be affected by land use dynamics that are not directly determined by climate change. To this aim, we analyzed three community-level indicators of climate change impacts that are based on the optimal thermal environment and average latitude of the distribution of bird species present at local communities. We used multiple regression models to relate the variation in climate change indicators to: i) environmental temperature; and ii) three landscape gradients reflecting important current land use change processes (land abandonment, fire impacts and urbanization), all of them having forest areas at their positive extremes. We found that, with few exceptions, landscape gradients determined the figures of climate change indicators as strongly as temperature. Bird communities in forest habitats had colder-dwelling bird species with more northern distributions than farmland, burnt or urban areas. Our results show that land use changes can reverse, hide or exacerbate our perception of climate change impacts when measured through community-level climate change indicators. We stress the need of an explicit incorporation of the interactions between climate change and land use dynamics to understand what are current climate change indicators indicating and be able to isolate real climate change impacts. This work has received financial support from the projects CGL2005-2000031/BOS, CGL2008-05506-C02-01/BOS and Consolider Montes CSD2008-00040 granted by the Spanish Ministry of Education and Science (MEC). Partial funding was also provided by the Catalan Government grant SGR2009-531. LB benefited from a Ramón y Cajal contract and MC from a Juan de la Cierva contract, both funded by MEC. http://hdl.handle.net/10459.1/69055 Climate change Birds Land use Forests Biodiversity Climate change or land use dynamics: do we know what climate change indicators indicate?