Western Ghats in the context of Bhaskara II

Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird (Promerops cafer) is found exclusively in southwestern South Africa and is therefore said to be endemic to that particular part of the world. An endemic species can also be referred to as an endemism or, in scientific literature, as an endemite.

Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becoming extirpated from an area they once lived), go extinct, or diversify into more species.

A liana is a long-stemmed woody vine that is rooted in the soil at ground level and uses trees, as well as other means of vertical support, to climb up to the canopy in search of direct sunlight. The word liana does not refer to a taxonomic grouping, but rather a habit of plant growth—much like tree or shrub. It comes from standard French liane, itself from an Antilles French dialect word meaning to sheave.

In biology, the canopy is the aboveground portion of a plant cropping or crop, formed by the collection of individual plant crowns. In forest ecology, the canopy is the upper layer or habitat zone, formed by mature tree crowns and including other biological organisms (epiphytes, lianas, arboreal animals, etc.). The communities that inhabit the canopy layer are thought to be involved in maintaining forest diversity, resilience, and functioning. Shade trees normally have a dense canopy that blocks light from lower growing plants.

Early observations of canopies were made from the ground using binoculars or by examining fallen material. Researchers would sometimes erroneously rely on extrapolation by using more reachable samples taken from the understory. In some cases, they would use unconventional methods such as chairs suspended on vines or hot-air dirigibles, among others. Modern technology, including adapted mountaineering gear, has made canopy observation significantly easier and more accurate, allowed for longer and more collaborative work, and broaddened the scope of canopy study.

Goa (/ˈɡoʊ.ə/ GOH-ə; Konkani: [ɡõːj]; Portuguese: [ˈɡoɐ] ) is a state on the southwestern coast of India within the Konkan region, geographically separated from the Deccan highlands by the Western Ghats. It is bordered by the Indian states of Maharashtra to the north and Karnataka to the east and south, with the Arabian Sea forming its western coastline. It is India's smallest state by area and fourth-smallest by population. Panaji (also Panjim) is the state's capital, while Vasco da Gama is its largest city by population. The state's official language is Konkani, spoken by the majority of its inhabitants.

The Portuguese, who first voyaged to the subcontinent in the early 16th century as merchants, conquered it shortly thereafter. Goa became an overseas territory of the Portuguese Empire and part of what was then known as Portuguese India, remaining under Portuguese rule for approximately 451 years until its annexation by India in December 1961. The historic city of Margão, or Madgaon, still reflects the cultural legacy of colonisation.

The Malabar Coast (Malayalam: [mɐlɐbaːr]) is the southwestern region of the Indian subcontinent. It generally refers to the western coastline of India stretching from Konkan to Kanyakumari. Geographically, it comprises one of the wettest regions of the subcontinent, which includes the southern tip of Goa, Kanara region of Karnataka, all of Kerala and Kanyakumari region of Tamil Nadu.

Kuttanad, which is the point of the lowest elevation in India, lies on the Malabar Coast. Kuttanad, also known as The Rice Bowl of Kerala, is among the few places in the world where cultivation takes place below sea level. The peak of Anamudi, which is also the point of highest elevation in India outside the Himalayas, lies parallel to the Malabar Coast on the Western Ghats.

Tamil Nadu is the southernmost state of India. The tenth largest Indian state by area and the sixth largest by population, Tamil Nadu is the home of the Tamil people, who speak the Tamil language—the state's official language and the first to be recognised as a classical language in India. The capital and largest city is Chennai.

Located on the south-eastern coast of the Indian peninsula, Tamil Nadu is straddled by the Western Ghats and Deccan Plateau in the west, the Eastern Ghats in the north, the Eastern Coastal Plains lining the Bay of Bengal in the east, the Gulf of Mannar and the Palk Strait to the south-east, the Laccadive Sea at the southern cape of the peninsula, with the river Kaveri bisecting the state. Politically, Tamil Nadu is bound by the Indian states of Kerala, Karnataka, and Andhra Pradesh, and encloses a part of the union territory of Puducherry. It shares an international maritime border with the Northern Province of Sri Lanka at Pamban Island.

South India, also known as Southern India or Peninsular India, is the southern part of the Deccan Peninsula in India encompassing the states of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu and Telangana as well as the union territories of Lakshadweep and Puducherry, occupying 19.31% of India's area (635,780 km or 245,480 sq mi) and 20% of India's population. It is bound by the Bay of Bengal in the east, the Arabian Sea in the west and the Indian Ocean in the south. The geography of the region is diverse, with two mountain ranges, the Western and Eastern Ghats, bordering the plateau heartland. The Godavari, Krishna, Kaveri, Penna, Tungabhadra and Vaigai rivers are important non-perennial sources of water. Chennai, Bengaluru, Hyderabad, Coimbatore and Kochi are the largest urban areas in the region.

The majority of the people in South India speak at least one of the four major Dravidian languages: Telugu, Tamil, Kannada and Malayalam. During its history, a number of dynastic kingdoms ruled over parts of South India, and shaped the culture in those regions. Major dynasties that were established in South India include the Cheras, Cholas, Pandyas, Pallavas, Satavahanas, Chalukyas, Hoysalas, Rashtrakutas and Vijayanagara. European countries entered India through Kerala and the region was colonized by Britain, Portugal and France.

The Deccan Plateau (/ˈdɛkən/ DEK-ən ) is a geographic formation that extends over an area of 422,000 km (163,000 sq mi) on the southern part of the Indian peninsula. It stretches from the Satpura and Vindhya Ranges in the north to the northern fringes of Tamil Nadu in the south. It is bound by the mountain ranges of the Western Ghats and the Eastern Ghats on the sides, which separate the region from the Western and Eastern Coastal Plains respectively. It covers most of the Indian States of Maharashtra, Karnataka, Telangana and Andhra Pradesh excluding the coastal regions, and minor portions of Tamil Nadu and Kerala.

The plateau is marked by rocky terrain with an average elevation of about 600 m (2,000 ft). It is subdivided into Maharashtra Plateau, Karnataka Plateau, and Rayalaseema and Telangana Plateau. The Deccan Traps in the northwest were formed by multiple layers of igneous rock deposited by basaltic lava flows following a massive volcanic eruption occurred at the end of the Cretaceous period (66 mya). The underlying bed consists of granite and sedimentary rocks formed during the Precambrian era and the formation of Gondwana.

The bicolored frog or Malabar frog (Clinotarsus curtipes) is a species of frog endemic to the Western Ghats of India. The tadpoles of the species are black and form dense and compact schools in slow moving streams in forested areas.

Dakshina Kannada district is located in the state of Karnataka in India, with its headquarters in the coastal city of Mangaluru. The district covers an area nestled between the Western Ghats and the Arabian Sea. Dakshina Kannada receives abundant rainfall during the Indian monsoon. It is bordered by Udupi district (formerly a part of this district) to the north, Chikmagalur district to the northeast, Hassan district to the east, Kodagu to the southeast and Kasaragod district of Kerala to the south. According to the 2011 census of India, Dakshina Kannada district had a population of 2,089,649. It is the only district in Karnataka to have all modes of transport - road, rail, water and air - due to the presence of a major hub, Mangaluru. This financial district is also known as the Cradle of Indian banking.

Kanyakumari district (Tamil: [kɐnːijaːkumaːɾi]), officially Kanniyakumari district, is one of the 38 districts of Tamil Nadu state and the southernmost district in mainland India. It stands second in terms of population density among the districts of Tamil Nadu. It is also the richest district in Tamil Nadu in terms of per capita income, and also tops the state in Human Development Index (HDI), literacy, and education. The district's headquarters is Nagercoil.

Kanyakumari district has a varied topography, with the sea on three sides and the mountains of the Western Ghats bordering the northern side. Except for a small stretch of land to the east of Kanyakumari town, almost the entire district is sandwiched between the Western Ghats and the Arabian Sea – the only district in Tamil Nadu state facing the Arabian Sea.

The Nīlgiris district (Tamil: [n̪iːlɐɡiɾi]) is one of the 38 districts in the southern Indian state of Tamil Nadu. Nīlagiri (lit. 'Blue Mountains') is the name given to a range of mountains spread across the borders among the states of Tamil Nadu, Karnataka and Kerala. The Nilgiri Hills are part of a larger mountain chain known as the Western Ghats. Their highest point is the mountain of Doddabetta, height 2,637 m. The district is contained mainly within the Nilgiri Mountains range. The administrative headquarters is located at Ooty (Ootacamund or Udhagamandalam). The district is bounded by Coimbatore to the south, Erode to the east, and Chamarajnagar district of Karnataka and Wayanad district of Kerala to the north. As it is located at the junction of three states, namely, Tamil Nadu, Kerala, and Karnataka, significant Malayali and Kannadiga populations reside in the district. Nilgiris district is known for natural mines of Gold, which is also seen in the other parts of Nilgiri Biosphere Reserve extended in the neighbouring states of Karnataka and Kerala too.

Nilgiris district ranked first in a comprehensive Economic Environment index ranking districts in Tamil Nadu (except Chennai district) prepared by the Institute for Financial Management and Research in August 2009. Tea and coffee plantations have been important to its economy. As of 2011, the Nilgiris district had a population of 735,394, with a sex-ratio of 1,042 females for every 1,000 males.

India is the world's 8th most biodiverse region with a 0.46 BioD score on diversity index, 102,718 species of fauna and 23.39% of the nation's geographical area under forest and tree cover in 2020. India encompasses a wide range of biomes: desert, high mountains, highlands, tropical and temperate forests, swamplands, plains, grasslands, areas surrounding rivers, as well as island archipelago. Officially, four out of the 36 Biodiversity Hotspots in the world are present in India: the Himalayas, the Western Ghats, the Indo-Burma and the Nicobar Islands. To these may be added the Sundarbans and the Terrai-Duar Savannah grasslands for their unique foliage and animal species.These hotspots have numerous endemic species. Nearly 5% of India's total area is formally classified under protected areas .

India, for the most part, lies within the Indomalayan realm, with the upper reaches of the Himalayas forming part of the Palearctic realm; the contours of 2000 to 2500m are considered to be the altitudinal boundary between the Indo-Malayan and Palearctic zones. India displays significant biodiversity. One of seventeen megadiverse countries, it is home to 7.6% of all mammalian, 12.6% of all avian, 6.2% of all reptilian, 4.4% of all amphibian and 11.7% of all fish.

The Konkan is a stretch of land by the western coast of India, bound by the river Daman Ganga at Damaon in the north, to Anjediva Island next to Karwar town in the south; with the Arabian Sea to the west and the Deccan Plateau to the east. The hinterland east of the coast has numerous river valleys, riverine islands and the hilly slopes known as the Western Ghats; that lead up into the tablelands of the Deccan. The Konkan region has been recognised by name, since at least the time of Strabo, in the third century CE. It had a thriving mercantile port with Arab tradesmen from the 10th century onwards. The best-known islands of Konkan are Ilhas de Goa, the site of the Goa state's capital at Panjim; also, the Seven Islands of Bombay, on which lies Mumbai, the capital of Maharashtra & the headquarters of Konkan Division.

Anamudi ("Elephant head", Malayalam: [aːnɐmuɖi]) is a mountain located in Ernakulam district and Idukki district of the Indian state of Kerala. With an elevation of 2,695 m (8,842 ft), it is the highest peak in the Western Ghats and in South India.