Environment and Ecology Part 1.9 - Species

Lesson 9 of 18 • 788 upvotes • 18:35mins

Roman Saini

Another awesome video in the High Yield series by Roman Saini. Still if you are left with any doubt, ask at his facebook page http://facebook.com/romansaini.official In this video, Dr. Roman deals with species, definition of ecology - Ramdeo Mishra, Environment, Population, Communities, Biological hierarchy, ecological hierarchy, organism, natural cryopresentation, mimicry, behavioural responses, tiger census - pug marks & fecal pellets, ecotone, edge effects - estuary, ecocline - physical transition zone – thermoclin, chemocline - chemical gradient, halocline - salinity gradient, pycnocline - variations in density of water, biological - phyto-climatic spectrum, biotic potential - bacteria greater than atoms in the universe in 1 year, biological hierarchy - domain, kingdom, phylum, class, order, family, genus, species, altruism - Sacrificial behaiour, communication between species - chemical signals – pheromones, tactile signals, visual signals, auditory signals, speciation, species - mule, tigon/tiglon – sterile, endemic species - Western ghats, Indo Burma, keystone species - mycorrhizae, predators - sea otter – imp. predator of sea urchins which destroy coral reefs and kelp roots, pollinators - honey bees, ecosystem engineers - prairie dog, beaver, indicator species - sentinal organism ex: lichen, exotic species, invasive species - nile perch, carrot grass, lantana, water hyacinth, african catfish Clarias, flagship species - conservation biology, umbrella species - Project Tiger. Video by Unacademy for IAS Preparation. How to prepare for IAS exam, Best IAS Coaching, IAS Civil Services Syllabus, Study Material for IAS Exam, IAS Civil Services Exam, UPSC Preparation, Tips for IAS, Material for IAS Preparation, UPSC Exam Material, IAS How to prepare, Other good resources: Mrunal and Clearias , IAS preparation tips, How to prepare for IAS 2015