Ian Lockwood

MUSINGS, TRIP ACCOUNTS AND IMAGES FROM SOUTH ASIA

Archive for the ‘Anamalai Hills’ Category

A Bend in the Ghat: An Anamalais Encounter

leave a comment »

Two of the 40+ hair in bend on the Ghat road up to the tea planting town of Valparai from the Palghat Gap.

Two of the 40+ hairpin bends on the Ghat road up to the tea-planting town of Valparai in the Anamalai Hills

Documenting the landscapes, ecology and cultures of India’s Western Ghats continues to be a life-preserving passion project for me. In recent years I’ve had less time to devote to this as teaching and family commitments have occupied most of my time. However, I try to take several field visits into the Ghats every year in order to explore locations – both well-known and unfamiliar- in new light. These trips nurture and energize my classroom instruction as well as contributing to my growing body of work on the Western Ghats and Sri Lanka biodiversity hotspot. Several weeks ago I had the opportunity to revisit the Anamalai (also spelt “Anaimalai”) Hills with my daughter Amy and parents Merrick and Sara Ann. The numerous bends in the ghat -something usually associated with nausea -were the source of much happiness with sighting of charismatic Western Ghats species such as Nilgiri tahr (Nilgiritragus hylocrius), Lion Tailed Macaques (Macaca silenus) and Great Pied Hornbills (Buceros bicornis).

The Anamalais are a critical area for biodiversity in the 1,600 long Western Ghats chain. They host important forest areas including wet evergreen forests and shola/grassland systems in the higher reaches. The northern slopes are relatively dry while the Valparai plateau area has one of Tamil Nadu’s highest recorded rainfall records. The Anamalais have several anthropogenic-dominated landscapes mainly revolving around plantation agriculture. Tea is a particularly important cash crop and expansive tea estates and non-native eucalyptus plantations now cover large areas of the Valparai plateau at the heart of the Anamalai Hills. Several large hydroelectric dams have been built in the hills for electricity generation and irrigation purposes.

As on my 2010 visit with Lenny, a key element on this visit was spending time with members of the Nature Conservation Foundation. They have been working in the Anamalais for the last 15+ years with a focus on a variety of key issues including rainforest restoration, mitigation of human-animal conflict and species-specific studies. Their staff has grown from a handful of enthusiastic individuals and volunteers and the group is now recognized as one of the most effective science-based conservation groups operating in India. While I was putting together this post the news came in that M. Ananda Kumar has been awarded the 2015 Whitley Prize (UK WWF) for his work (though NCF) with reducing human-elephant conflict using an innovative SMS warning system.

Anai Mudi and the Anai Mudi forests as seen from the edge of the Valparai Plateau to the peak's west.

Anai Mudi and the Anai Mudi forests as seen from the southern edge of the Valparai Plateau to the peak’s west. This view is looking south, south-east.

Snapshots from several walks int he Anamalais. From upper left: Nilgiri Langur, CUllenia, Civit droppings, Eleocarpus leaves on forest floor, CUllenia opened, canopy of rainforest, skull of a civet or mongoose, Lion tailed macaque.

Snapshots from several walks int he Anamalais. From upper left: Nilgiri Langur, Cullenia, Civit droppings, Elaeocarpus leaves on forest floor, Cullenia opened, canopy of rainforest, skull of a civet or mongoose, Lion tailed macaque.

Towering rainforest tree with mossy bark @ 1,400 meters in the Anamalai Hills.

Towering rainforest tree with mossy bark in Cullenia-Mesua-Palaquium dominated forest @ 1,400 meters in the Anamalai Hills.

On this visit we spent a morning exploring a mid-elevation evergreen forest fragment near Valparai with a team from NCF. The walk was on behalf of David Westcott and Soumya Prasad who were on a brief visit and we were lucky to tag along. Shankar “Sridar” Raman led us down a disused forest road and was soon picking out hard to identify species from calls and distant movements. A pair of GPHs was calling and gave us a decent view. We logged in views and sightings of a variety of mid-high altitude species including a Mountain Imperial Pigeon, Black & Orange Flycatcher, Black-naped monarch and several others. Mixed species flocks with nuthatches and flycatchers, drongos and Fairy Blubirds were conspicuous. S Vijay Kumar, M. Ananda Kumar and P Jegananthan were along and it was great to have so many sets of eyes scanning all levels of the forest. On our return to Valparai we were caught in a violent storm and took refuge in Jegan’s home. That night David (and Soumya) shared a presentation on the seed dispersal roles of flying foxes in Australia. Ananda and his colleague Ganesh Ragunathan also shared the work with SMSs as highlighted in a new short film.

Snapshots from the NCF information center. The lower right images is from the forest walk about the time that we had the fine view of the Mountain Imperial Pigeon.

Snapshots from the NCF information center. This is a first class interpretation center-something sorely needed in the Palni Hills and other ranges of the Western Ghats. The lower right image is from the forest walk about the time that we had a fine view of the Mountain Imperial Pigeon.

During the next day Merrick and I explored out from Valparai to several views points to look for views of the higher ranges and birds. We had several superb views up to Grasslhills and Eravikulam. Anai Mudi overshadows the whole Valparai Plateau –something I remember from the 2002 tahr census hikes up southern India’s highest peak. During those visits I sat for hours on the peak scanning the lower landscape for wildlife and took in the full majesty of the rolling plateaus and dense forested valleys. With Amy and Sara Ann, we spent an afternoon observing a GPH nest near the NCF nursery. We were rewarded with fine sightings of the hornbill parents flying in to feed their chick the female had apparently come out of the nest shortly before we arrived. It was a much too short a visit and we left with promises to return to learn more about the Anamalais. On the way out one of the, now famous, LTM troops was at the roadside in the Puduttotam forest fragment patch. The pictures below demonstrate  how close you can get, as well as the challenge that human communities pose to these endangered primates.

Lion Tai;ed Macaques at Puduthotam Estate. This is a habituated troop that lives in a small isolated island of tropical evergreeen forest surrounded by tea estates.

Lion Taied Macaques at Puduthotam Estate. This is a habituated troop that lives in a small isolated island of tropical evergreeen forest surrounded by tea estates.

Valparai town overshadowed by the high rolling hills known as Grasshills. A view from the west as suggested by friends at NCF.

Valparai town overshadowed by the high rolling hills known as Grasshills. A view from the west as suggested by friends at NCF.

 

Great Pied Hornbill (Buceros bicornis) in flight just outside of Valparai in the mixed plantation/forest near the NCF nursery.

Great Pied Hornbill (Buceros bicornis) in flight just outside of Valparai in the mixed plantation/forest near the NCF nursery.

True color rendition of a multi-spectral Landsat 8 image of the Anamalai Hills area. Click on image for a large 150 DPI A1 size version.

True color rendition of a multi-spectral Landsat 8 image of the Anamalai Hills area. Click on image for a large 150 DPI A1 size version.

 

Infrared (thermal) rendition of a multi-spectral Landsat 8 image of the Anamalai Hills area. Click on image for a large 150 DPI A1 size version.

Infrared (thermal) rendition of a multi-spectral Landsat 8 image of the Anamalai Hills area. Click on image for a large 150 DPI A1 size version.

Map illustrating relief and elevation in the Anamalai Hills based on recently released 2.5 meter Digital Elevation Model (DEM) from ISRO/Bhuvan. Click on image for 150 DPI A1 version.

Map illustrating relief and elevation in the Anamalai Hills based on recently released 1 Arc Sec (30 m) Digital Elevation Model (DEM) from ISRO/Bhuvan. Click on image for 150 DPI A1 version.

SELECTED REFERENCES

Hamilton, Douglas. Records of sport in southern India chiefly on the Annamullay, Nielgherry and Pulney mountains, also including notes on Singapore, Java and Labuan. London: R.H. Porter. 1892. Print & Web.

Kumar, Ananda M. Divya Mudappa and T.R. Shankar Raman. “Asian elephant Elephas maximus habitat use and ranging in fragmented rainforest and plantations in the Anamalai Hills, India. Tropical Conservation Science. June 210. Web. 4 May 2015.

Lockwood, Ian. “Restoration & Revival in the Anaimalais.” Ian Lockwood Blog. August 2010. Web.

Southern Western Ghats Elevation With 30 meter SRTM

with 3 comments

Draft#1 SRTM derived elevation of India's southern Western Ghats.

Draft#1 SRTM derived elevation of India’s southern Western Ghats. The red lines highlight the 1,500 meter contour- roughly where shola/grasslands mosaic ecosystems start. This is a map in progress and it de-emphasizes political boundaries and settlements. Click on image for a larger 150 dpi A3 version.

Since my first geography lessons I have been interested in cartography and the art & science of depicting the earth’s surface. It was my Grade 4 teacher Kris Riber –also a KIS graduate- who got me interested in maps. We each had to do a study of an Indian state (mine was Meghalaya) and part of the task was to make a large, gridded map of our state. Since then I have enjoyed making sketch maps and have searched for the best printed maps of my areas of interest. In India is not easy and it continues to be a great challenge to acquire maps of some places, given restrictions and general bureaucratic barriers that make getting maps challenging. I persevered and now have most of the 1:50,000 and some 1:25,000 scale Survey of India topo sheets for the significant ranges of the Western Ghats. Some of these came from my grandfather Edson Lockwood and are early 20th Century editions where the cartography is at a highly refined level. In the 1990s I was exposed to Tactical Pilotage Charts of the Western Ghats and North East India (see the University of Texas Library site for free downloads). These are at a scale of 1:500,000 but depict the relief and elevation very accurately (see sample below). The advent of modern Geographic Information Systems (GIS) and web-based tools have allowed me to dabble in mapping the areas that are the subject of my photo-documentation and writing.

Last year USGS released a new 30-meter SRTM dataset for the world that allows mapmakers using GIS to more accurately depict relief and elevation. I was very interested in depicting the relief of the Palanis and other ranges more accurately. Over the last few months I have downloaded the tiles for Sri Lanka and southern India and am starting to use them to more accurately depict elevation in my areas of interest. I used a mosaic of about nine SRTM 30-meter tiles to create this year’s WWW Sri Lanka map. The map above was made to help my friends working on shola/grasslands landscapes in the southern Western Ghats (see post on “Forest Plantations”).  The goal was to depict the spatial relationship of the “sky islands” (above 1,500 meters) of the Western Ghats where this vegetation type was once dominant.

There are several places to download SRTM tiles. I used Earthexplorer to download the Sri Lanka and southern India tiles. ESRI’s ArcGIS online will shortly have 30-meter DEM tiles available to use as background imagery. Because we have dedicated licensed software I tend not to use the online versions. At the moment ESRI offers this data for all the continues except Australia and Asia.

Tactical Pilotage Chart (TPC) of southern India featuring sheets TPC- K8C and TPC-K8d.

Tactical Pilotage Chart (TPC) of southern India featuring sheets TPC- K8C and TPC-K8d. Published by the US National Mapping & Imagery Agency with revisions in June 2000. Sourced from the Univeristy of Texas Library.

SELECTED REFERENCES & PAST BLOG POSTS WITH MAPS

Lockwood, Ian. “Hypsometric tinting of the Southern Western Ghats Landscapes.” Ian Lockwood blog. August 2013. Web.

Written by ianlockwood

2015-04-30 at 11:54 pm