Question

What had happened to ponds and lakes ?​

Answer 1

Answer:

Lakes and ponds (also known as lentic systems) are a diverse set of inland freshwater habitats that exist across the globe and provide essential resources and habitats for both terrestrial and aquatic organisms. Although widely distributed and vital for many species, including humans, these habitats account for just over 3% of the Earth's surface (Downing et al. 2006). Importantly, these rare systems are increasingly threatened by the human demand for freshwater as well as human activity (Dudgeon et al. 2006). Recent evidence suggests that freshwater systems are more imperiled than marine and terrestrial ones (Sala et al. 2000, Dudgeon et al. 2006). Effective conservation and management of these systems relies on our ability to fulfill the growing human demand for freshwater while maintaining system integrity.The study of lentic systems is conducted within the field of limnology. Limnology is the study of the structural and functional interrelationships of organisms of inland waters as they are affected by their dynamic physical, chemical, and biotic environments (Wetzel 2001). Several excellent books published within the past decade provide in-depth coverage of lakes and ponds (Wetzel 2001, Brönmark & Hansson 2005, Moss 2010). Another excellent resource is the Encyclopedia of Inland Waters (2009). In this article, we present a brief overview of lentic systems and refer the reader to specific literature for more detailed information.