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3 THE LONDON MIDLAND REGION 24 This chapter describes field work in the LMR during 1979. Certain modifications to information collection are discussed and short sections written about the groups of plants and animals inVestigated. LMR vegetation will be classified and analysed following the methods tested on Southern and Western Region data (Sargent & Mountford 1979) when information from all regions becomes available and can be pooled. Maps showing the location of sites and the relation of LMR lines to geological and topographical features are given. 3.1 Information collection Data collection in the LMR was greatly helped by cooperation of Permanent Way staff who entered into useful discussions and supplied excellent maps. Field work began in April in the Chilterns and progressed northward during the season to culminate in Cumbria at the end of August. During this period,120 random sites and 72 biological interest (BI) survey sites* were visited. Within the random survey, 44 sites proved to be cuttings, 31 embankments,and the remainder flats or mixed formations. Following discussion (Sargent & Mountford 1979),the cutting/embankment survey had been discontinued to free resources to increase the density of random sampling. The high proportion of cuttings and embankments visited randomly supports the decision to curtail this area of work. 3.1.1 Random site selection Unlike previous years, the random sites in LMR were stratified. Of. the 25 strata into which BR land has been divided (Chapter '2), 16 have representatives in LMR. The distribution of samples was strictly proportional to the number of track (ten mile) units in each stratum (Table 3.1) with the exception that it was decided to visit a minimum of 2 random sites stratum-1. Location of the sites followed a 2 stage random number technique-in which first the 10 mile unit to be sampled, and then the site(s) (100 m) within that unit, were selected. In some cases, where the units were randomly chosen more-than once, this method-gave rise to.morerthanone site being visited in a unit. 3.1.2 The vegetation key In an attempt to relate sites visited within the BI survey to random sites, a vegetation key was introduced. The key (Fig. 1) was derived from the ISA of combined random data from Southern, Western and Eastern Regions. The ISA was run to 5 levels and the resulting 32 classes used without modification. Non-random sites which are expected to be of biological interest and which are visited because of prior information of some kind.
Table 3.1. Division of sampling effort amongst strata occurring in the London Midland Region. Stratum Revised No. Stratum Old No. 25 Track units Members Sites Sampled ( 3 1 2 3 ( 4 5 3 7 9 27 14 8 10 34 17 11 13 28 12 12 4 8 4 13 15 14 7 14 16 11 6 15 17 34 16 16 18 5 3 19 25 12 17 20 2 2 18 21 1 2 19 22 6 4 ( 23 5 3 20 ( 24 3 2 23 27 10 5 24 29 7 4 25 32 2 2 16 19 229 120
Page 1 and 2: crirTh Tritc,r ture .-on:Rervancy C
Page 3 and 4: I. INSTITUTEOF TERRESTRIAL ECOLOGY
Page 5 and 6: SUKMARY The background of the work
Page 7 and 8: CONTENTS SUISLARY 1_ INTRODUCTION 1
Page 9 and 10: 1 INTRODUCTION 1 April 1979 to Marc
Page 11: 2.2.1 Attributes The selection of a
Page 14 and 15: .IMOOil 101111119111111011411111111
Page 16 and 17: Table 2.2. Preferential Attributes.
Page 18 and 19: 10 All four qouthern British Rail R
Page 20 and 21: 1 1 12 Class 9 Central Eastern Lowl
Page 22 and 23: Class 14 Lancashire Plain 14 Estima
Page 24 and 25: Class 19 Scottish lowlands 16 Estim
Page 26 and 27: 1 1 1 1 1 1 18 Acid brown and organ
Page 28 and 29: 2.3.4 Sampling proportions 20 Easte
Page 30 and 31: V 22 Table 2.5. The assemblarestof
Page 34 and 35: . . FIcructE l . ciary . F3c4iusq r
Page 36 and 37: 28 Hornungiapetraea,Pyrolar. rotund
Page 38 and 39: -- Aóphila-arenar;ia- 30 Table 3.2
Page 40 and 41: Table 3.2 (continued) Larixdeciduam
Page 42 and 43: Table 3.2 (continued) 34 Valerianel
Page 44 and 45: Table 3.3 . Bryophytes recorded fro
Page 46 and 47: (b) Hepatics Farbilophoziafjoerkei
Page 48 and 49: ON BR T ALS ANIMAL RECORD REGN. DIV
Page 50 and 51: Erithacusrubecula robin Turdusmerul
Page 52 and 53: 44 Table 3.6 . Species list of inse
Page 54 and 55: Table 3.7 . Species list of other i
Page 56 and 57: Table 3.8 Soil invertebrates. 48 Cl
Page 58 and 59: 50 To try, on the other hand, to so
Page 60 and 61: 6 REFERENCES 52 BUNCE, R.G.H. & SMI
Page 62 and 63: NOTES WIDTII 11 FORM SITE NAME RAIL
Page 64 and 65: NOTES WIDTH 11 RAILWAY LINE. SIDE F
Page 66 and 67: WIDTH CRID OF SITE NAYS RAILWAY LIN
Page 68 and 69: NOTES WIDTH II FORM SIDE RAILWAY LI
Page 70 and 71: WIDTH NOTES RAILWAY LINESIDE FORM S
Page 72 and 73: IrlDnt Bons GRID OF RAILWAY LINESID
Page 74 and 75: WIDTH NOTTS SITE NAME RAILWAY LINE
Page 76 and 77: WIDTH rom NCTTES BITE NAVE RAILWAY
Page 78 and 79: W1 12711 GRID OF SITENUM NOTTS RAIL
Page 80 and 81: WIDTli GRID OF NOTES RAILWAY LIMESI
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WI 1 NOTES SITE NAIM RAILWAY LINE 8
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REF DATE SITE MAW RAILWAY LINZ SIDE
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CRID OF RAILWAY LINE SIDE FORMSOURC
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NOTTS SITE Loa RAILWAY LINE SIDE FO
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: SIDE FORM RAILWAY LINE 817! NAME
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- EL: ----- . . . . . Miles \0 ci y
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6 119 .63 63 69 6 61 63 63 70 63 67
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