Causes of biodiversity loss
Causes of biodiversity loss is a Environment concept from the MPSC syllabus, tested in 2 past MPSC questions (2013, 2020). Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
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वस्तीस्थान नष्ट होणे खालीलपैकी कोणत्या उपक्रमामुळे होऊ शकते ? Habitat destruction can happen due to which of the following activity ?
(a)निर्वनीकरण / Deforestation
(b)दलदलींचे पुनःप्रापण / Reclamation of Marsh
(c)जमिनीच्या वापरात होणारे बदल / Change of land use pattern
(d)उदरनिर्वाह शेती / Subsistence farming
Habitat destruction is caused by human activities such as deforestation, reclamation of marshlands, and changes in land use patterns. Subsistence farming alone on a small scale is less impactful compared to large-scale commercial or developmental land conversions, though options a, b, and c directly lead to massive habitat loss.
जैविकविधेतेच्या ह्रासासंबंधी घटक : (a) भू वापरातील बदलामुळे होणारा वस्तीस्थानांचा ह्रास. (b) प्रदूषणामुळे होणारा वस्तीस्थानांचा ह्रास. (c) शिकार करणे. (d) रोग व साथीचे रोग पसरणे. (e) प्रजातीचा अति उपसा. वरीलपैकी कोण/कोणते घटक पाणी हे वस्तीस्थान असणाऱ्या ठिकाणची जैवविविधता कमी होण्यास मोठ्या प्रमाणात कारणीभूत ठरतो/ठरतात. Aspects related to the loss of biodiversity : (a) Habitat loss due to change in land use. (b) Habitat loss due to pollution. (c) Predation. (d) Outbreak of diseases and epidemics. (e) Excessive exploitation of species. Which of the above is/are the major causative factor(s) for decreasing biodiversity from aquatic habitat ?
(a)भू वापरातील बदलामुळे होणारा वस्तीस्थानांचा ह्रास. / Habitat loss due to change in land use.
(b)प्रदूषणामुळे होणारा वस्तीस्थानांचा ह्रास. / Habitat loss due to pollution.
(c)शिकार करणे. / Predation.
(d)रोग व साथीचे रोग पसरणे. / Outbreak of diseases and epidemics.
(e)प्रजातीचा अति उपसा. / Excessive exploitation of species.
In aquatic ecosystems, pollution (b) alters water quality and destroys habitats, while excessive exploitation (e) like overfishing directly depletes species populations.