Anthropogenic alteration of flow, temperature, and light as life-history cues in stream ecosystems.

摘要: Life history events, from mating and voltinism to migration emergence, are governed by external historically predictable environmental factors. The ways humans have altered natural environments during the Anthropocene created myriad compounding changes these cues. Over past few decades, there has been an increased interest in control temperature exerts on life events as concern over climate change increased. However, is not only cue that altered. In stream ecosystems, flow light serve important cues addition temperature. timing magnitude of peak flows can trigger migrations, decreases may cause a insect enter diapause, photoperiod appears prompt spawning some species fish. Two or more interact with one another complex sometimes unpredictable ways. Large dams increasing impervious cover urban ecosystems modified Precipitation draining hot surfaces increases adds variability general pattern warming change. artificial suburban areas bright enough eliminate dampen signal resulted caddisfly emergence becoming acyclical. resulting also potential influence evolutionary trajectory organism its interactions other species. This paper offers review conceptual framework for future research into how flow, temperature, drive organisms changed We then present ecological consequences conclude highlighting what we perceive be most pressing needs.