OF MD COLLEGE PARK ~:r. /.** WALK BOOK: SHELDRAKE RIVER TRAILS: A CONSERVATION AREA OF THE TOWN OF MAMARONECK NEW YORK. idta' r «*Ti v Jrtf l f£a&«4 •mLf A '4$\ 2 yr^ 1 iJr"fflP 1 v j *a5^oP<»5 ■ ,'A National Trust for Historic Preservation Library of the University of Maryland, College Park UNIVERSITY OF MARYLAND At COLLEGE PARK LIBRARIES Digitized by the Internet Archive in 2011 with funding from LYRASIS members and Sloan Foundation http://www.archive.org/details/walkbooksheldrakOOshel f WALK BOOK SHELDRAKE RIVER TRAILS k! A CONSERVATION AREA OF THE TOWN OF ... o 25 in W $ H H O 23 > -i ;o 5 w < MAMARONECK NEW YORK WHAT ARE THE SHELDRAKE RIVER TRAILS? The 23 acre woodland area described in this booklet is the central section of a 54 acre tract of natural woodland owned by the Town of Mamaroneck. The entire tract is being maintained as a conservation area to attract and hold native plants and animals and to provide for observation and study of plant-animal communities. The trails offer a wealth of beauty and interest for the artist and photographer as well as a place of enjoyment for all lovers of the out-of-doors. The development of Sheldrake Trails, and of the Leatherstocking Trail which is being developed through the former Cross County Parkway lands, is being directed by a five member Conservation Advisory Com- mittee appointed by the Town Board. This Committee has worked cooperatively with the Mamaroneck Board of Education to provide an outdoor classroom that will permit creative educational use while maintaining and preserving the woodland. Clifford E. Emanuelson, Associate Director of the Pinchot Institute for Conservation Studies, has served as Conservation-Education Con- sultant to the Advisory Committee and the Board of Education. Mr. Emanuelson has had the assistance of Sheldon Levine and Harry A. Simon, science teachers appointed by the Board of Education, in study- ing the educational potential of the area and developing plans for class use of the trails. The Conservation Advisory Committee and the Town Board welcome and encourage your use of these trails. But orderly development and maintenance of the natural features of this area require both coopera- tion and discipline on the part of the individuals and the groups that visit the Sheldrake Trails. By observing the few, simple rules for protection of the area that are found on page 35, you will help to preserve this unique woodland tract and make it possible for all resi- dents of our community to enjoy its unspoiled natural beauty. HOW TO USE THE WALK BOOK The Sheldrake Trails are developed with guide stations, each of which is located by a lettered guide post. These stations are designated on the map in the center of this book. The various trails in the area are described and the illustrations on the left hand margins will help to orient you to the features to be observed as you walk along these trails. The hope is to stimulate and encourage observation and research on the part of individuals and groups using the area. Therefore, there is a minimum of labeling. Trails in the area are designated as follows: Westside Stream and Chestnut Trails Stations A to D See pages 4 through 9 Flood Plain of Sheldrake River Stations D to C See pages 9 and 10 Geology Trail Stations B to I See pages 11 through 14 Eastside Stream, Mill Dam and Old Farm Trails Stations E to H See pages 25 through 32 Woodland Trail Stations J to G See pages 21 through 24 Leatherstocking Trails Stations D to F See pages 15 and 16 This walk booklet has been developed to be a general guide for the trails throughout the Sheldrake River Conservation Area. Additional scientific guides and field keys would be necessary for those wishing to go into depth regarding a specific identification of flora and fauna. WESTSIDE STREAM AND CHESTNUT TRAIL At this point you are under the large TULIP TREE (1). Can you see the similarity of the TULIP TREE leaf (1). and the tulip flower? Here you can see the large area map on the back of the main sign. Please orient yourself. On your left as you enter the trail, you will observe a giant nesting and feeding tree trunk. For the sake of safety the top decaying branches must be removed. The main trunk will remain for years as a natural source of food and shelter for many of the creatures who make their homes here. Listen for the water of the SHELDRAKE RIVER running over and through the rocks on your right. Along the trail you will find both VIR- GINIA CREEPER (2) and POISON IVY (3). Examine both — But leaves of three Let them be! 4 You will be passing under a canopy of WITCH HAZEL (4). Note the numerous witch's caps on the leaves. Why does the plant grow this gall? ktu-w4 ORIENTATION AREA To the left you will see log seats. A short quiet visit here may bring you pleasant sights and sounds. A tall leaning BLACK OAK (5) is just above you at guide post B. Near to it is a tall SWEETGUM (6) which is commonly called Red Gum. The SWEETGUM is an excellent tree for ornamental planting ranking with the most beautiful of our eastern broad-leaf trees. THE POND As you move on, you come to the "old swimming hole" of bygone days. The geological features show the eroding force of water. A trip here on a rainy day will tell the story better than words. Is this a natural pool? What forces created it? How? Was it used by the farmer? What use is being made of it now? Can you find evidence along the bank of feeding or stalking? Are there homes in the bank? Study the two streams which join here. How are they different? This bridge will appear at times to be built for no purpose. A visit in the spring or during and after a rain will prove its worth. Are the fish in the pool natural stock? From where did they come? What evi- dence of use do you find here now? Animals and birds? Notice the water-eroded rock across the pond. How does the water wear away such hard rock? What happens to the ma- terial which is worn away? A study of deposits of the small stream under the bridge and out into the pool may give some answers. Note the tree growth among the rocks. Here on the rocks is a good place to visit and observe. STUMP SCOUTING As you move along up stream, you will lose sight of the stream and come to a fork in the trail at Station C. This letter is cut into a stump top. Jack in the pulpit Have you ever tried stump scouting? Try to answer these questions. How old was the tree when cut down? Why was it cut? Where is the center? Why is the center of the tree not in the center of the stump? What tools were used in cutting down the tree? Was a hand or power saw used? Was an ax used? Was the woodsman experienced? Was he right or left handed? What kind of tree stump is it? Along the left fork you will find many young saplings. This is a good area for identification as there are many varieties of trees. A tree key would work well here. THE CHESTNUT STORY On the right is an excellent example of the struggle to survive of the AM ERIC AN CHESTNUT (7). It is our best example of persistence. Notice the new shoots coming up from the living root system from which the trunk and crown were killed 50-60 years ago. You will find here three stages — the dead and diseased sprout, the living sprout, and the new sprouts taking over and keeping the root system alive. The will to live in all things is amazing. Man is working to conquer the infection of this tree as it was at one time our most valuable harvest tree. What part did it play in the economic growth and development of our nation? Was it used for railroad ties, telephone poles, home and barn timbers, boards and flooring, fence posts, etc? Why? Living sprout New sprouts coming up <^^2> FIRE AREA As you move along, you will notice that many young trees have been burned and that new growth, predominantly SASSA- FRAS (8), is covering the burn. Note that the shrub has four differently shaped leaves. Can you find the right and left hand mitten leaves on the same tree? &4k Please Help Prevent Forest Fires! OPEN AREA Once again you are on the bank of the SHELDRAKE RIVER. On the left as you face the river is an open area. You may wish to walk up the old bridle trail to the upper end of the marsh. This trail is for your enjoyment and is open to Highland Avenue. Looking across the river, note the variety of field plants which provide food and cover for wildlife. This is a good area for studying plant succession. Going right at Station D, you will be walking downstream. Observe the several ferns along the trail. Note the tiny dark spore cases, or sporangia, grouped into fruiting dots on the underside. There are several decaying trees also. Some of these standing trees have fungus growths. There is also evidence of feeding and nest- ing holes. How long does the process of decay take? Examine the fallen log on your right. In death there are many evidences of new life, food, and shelter. FLOOD PLAIN AREA In this area the grapevines have taken over control. What is happening to the trees and shrubs? Should the vine be cut out or does the food that it provides make up for the damage it is causing the trees? How do the vines affect the growth of other plants? Here you find many plants which need a good supply of water. This area will flood during severe and heavy rains. At the bend in the river you can observe the undercutting of the root system of the trees on the opposite bank. What will eventually happen to these trees? Liverwort Among the large rocks of the old bridle trail is a whole new world of water plant life. The pool downstream from the rocks with its sand bar creates a completely different environment. Are these living environments independent? Following the trail downstream you will return to Station C. From this point you will retrace your steps to Rockland Avenue. Do stop along the trail and enjoy this area which is here for you. 10 GEOLOGY TRAIL Leave on the Geology Trail from the orientation area through the granite boulders in back of the logs. At this point the pond is to the right. As you move along, look up over the marsh on a 30° or 2:00 o'clock angle. What is happening to the tops of these decaying trees? Who is feeding there? Who may be living there? Can you identify feed- ing and living areas? Note the sharp incline on your left as you walk along. What indicators do you have as to the underground structure of the s v^ \ m ^s v\ Geology wall — The constructed wall here has specimens of local geological structure. The three prominent rocks on the crest of this retention wall are the three basic forms: IGNEOUS (42) SEDIMENTARY (43) and METAMORPHIC (44) 11 To the left of the trail there is an ex- cellent example of chipping. Can you see how this chip would fill in its old po- sition? Turning left through granite pass note the joints — rock separations to the left — making a cliff here. What part have roots played in separating the joints? Pass the twin oaks 2 feet in diameter. What do you estimate the age of these trees to be? What are the ways of determining the age? What other stately trees do we have in this area? Would these make good lumber? Why? Can they be har- vested? Has there been a harvest here in past years? What was the need? Farm- ing? Lumber? What ornamental trees do we find here? How did they get here? Note the old stone wall and man's re- cent creation about 12' high. Which was harder to build considering when each was built? Turn to the right with the stone ledge #t^ ' to your right and the watery depression to your left. Is this depression natural? What is being done to drain it? Why? Cross the small foot bridge and note the rock garden along the ledge of rock about 12' to 15' high. Why are the ferns pre- dominant here? What kinds are there? What makes the size different? Consider the man-made wall and this wall of nature's handiwork. Which took longer to build? How did natural forces make this come to be? Wind? Rain? Water? Rivers? Glaciers? As you leave the rock and fern garden, you come into an area with a predomin- ance of small trees. Were these planted by man or did they grow by natural seed growth? Are they root sprouts? 13 -Wi Is there a large parent tree near by? What is the color of the bark? How does it feel? What is the shape of the leaf? What do you notice about the leaf's mar- gin and veins? Has the bud formed for next year's growth? These are all char- acteristics which you can remember to help you recognize your friends of the woods just as you do your human friends. We now come to a T in the trail at guide post I. The left turn will take you on the Leather Stocking Trail along the north- west belt to Highland Road and beyond. Off this trail about 20' is an excellent example of a glacial erratic. On the right turn you pass over a small stream that feeds our marsh to the right. On the left, note the expiring trees. What has caused this to happen? Continuing on the open path will bring you to the stream trail along the Shel- drake River — Station D. Watch for the overhand knot tree. 14 ■MM*' /5> You are now arriving at two bridges, a natural and a man-made one. Which do you prefer? Take your choice. Is the same material being used? As you stand on the man-made bridge, what do you see? What is moving? Why was the bridge built here? What is hap- pening to the bridge? Why? If there is water flowing, why does it make the sounds that it does? Are the stones across the stream in a natural formation? If not, why were they put where they are? What is the purpose of a check dam? Can you find a place where another one is needed? Are there different shapes on the crowns of the different kinds of trees you see? As you walk down the path, note the in- creased bird activity. Why? How many different ones do you see? What do the yellow paint markings mean? Why are they marked so boldly on the trees? Don't guess. Look where the ar- row is pointing. Did you find anything? Is this system important to you? Where is its source? How far away? Why so far? V^ZArfT.