ALMaSS  1.0
The Animal, Landscape and Man Simulation System
Pond Class Reference

Ponds are defined as freshwater bodies between 25m2 and 5000m2. For newts the effective size is limited to 400m2. More...

#include <elements.h>

Inheritance diagram for Pond:
Freshwater NonVegElement LE

Public Member Functions

 Pond (void)
virtual void DoDevelopment (void)
void CalcPondPesticide ()
 Calculates the amount of pesticide per unit pond water
void CalcLarvalFood ()
 Calculates the amount of larval food present
bool SubtractLarvalFood (double a_food)
 Called by a larva when feeding, removes an age specific amount of larval food
double SupplyPondPesticide ()
 supply the current pesticide concentration per litre More...
virtual void SetMaleNewtPresent (bool a_ispresent)
 Sets a male as present/absent. More...
bool IsMaleNewtPresent ()
 Gets whether there is a male newt as present. More...
- Public Member Functions inherited from Freshwater
 Freshwater (void)
- Public Member Functions inherited from NonVegElement
 NonVegElement (void)
- Public Member Functions inherited from LE
 LE (void)
virtual ~LE (void)
LE_Signal GetSignal (void)
void SetSignal (LE_Signal a_signal)
int GetSubType (void)
void SetSubType (int a_subtype)
int GetALMaSSEleType (void)
void SetALMaSSEleType (int a_type)
virtual TTypesOfLandscapeElement GetElementType (void)
void SetElementType (int a_type)
void Trace (int a_value)
void ResetTrace (void)
long GetRunNum (void)
void BumpRunNum (void)
long GetMgtLoopDetectDate (void)
void SetMgtLoopDetectDate (long a_num)
long GetMgtLoopDetectCount (void)
void SetMgtLoopDetectCount (long a_num)
void Tick (void)
virtual TTypesOfVegetation GetVegType (void)
int GetVegStore (void)
void SetVegStore (int a_veg)
void ZeroVegAge ()
int GetVegAge ()
virtual void RecalculateBugsNStuff (void)
virtual int GetVegPhase (void)
virtual double GetVegCover (void)
virtual double GetVegHeight (void)
virtual APoint GetCentroid ()
virtual int GetCentroidX ()
virtual int GetCentroidY ()
virtual void SetCentroid (int x, int y)
virtual double GetDigestability (void)
virtual int GetVegDensity (void)
virtual bool GetSkScrapes (void)
virtual bool IsMatureCereal ()
virtual bool IsCereal ()
virtual bool IsGrass ()
virtual bool GetVegPatchy (void)
virtual void SetVegPatchy (bool)
virtual double GetDayDegrees (void)
virtual double GetLAGreen (void)
virtual double GetLATotal (void)
virtual double GetGreenBiomass (void)
virtual double GetDeadBiomass (void)
virtual double GetVegBiomass (void)
virtual double GetWeedBiomass (void)
virtual double GetInsectPop (void)
virtual void SetInsectPop (double)
virtual void Insecticide (double)
virtual void InsectMortality (double)
virtual void ReduceWeedBiomass (double)
virtual void ToggleCattleGrazing (void)
virtual void TogglePigGrazing (void)
virtual void SetVegBiomass (int)
virtual void SetVegType (TTypesOfVegetation, TTypesOfVegetation)
virtual void SetVegHeight (double)
virtual void SetVegParameters (double, double, double, double)
virtual void SetCropData (double, double, double, TTypesOfVegetation, double, int)
virtual void SetCropDataAll (double, double, double, double, TTypesOfVegetation, double, double, int, double, bool, double)
virtual void StoreLAItotal ()
virtual void SetGrowthPhase (int)
virtual void ForceGrowthInitialize (void)
virtual void ForceGrowthTest (void)
virtual void ForceGrowthDevelopment (void)
virtual void ZeroVeg (void)
virtual void ReduceVeg (double)
virtual void ReduceVeg_Extended (double)
virtual void GrazeVeg_Extended (double)
virtual double GetTrafficLoad (void)
virtual TTypesOfVegetation GetPreviousCrop (int)
bool GetPoison (void)
void SetPoison (bool a_poison)
bool GetHigh (void)
int GetCattleGrazing (void)
bool GetPigGrazing (void)
bool HasTramlines (void)
bool IsRecentlyMown (void)
int IsRecentlySprayed (void)
int GetPoly (void)
 Returns the polyref number for this polygon. More...
int GetMapIndex (void)
void SetMapIndex (int a_map_index)
int GetOwnerFile (void)
int GetOwnerIndex (void)
int GetLastTreatment (int *a_index)
FarmGetOwner (void)
double GetArea (void)
double GetGooseGrazingForage (GooseSpecies a_goose)
double GetBirdSeed (void)
void SetBirdSeed (double a_forage)
double GetBirdMaize (void)
void SetBirdMaize (double a_forage)
int GetCountryDesignation (void)
void SetCountryDesignation (int a_designation)
long GetOldDays (void)
void SetOwner (Farm *a_owner, int a_owner_num, int a_owner_index)
void SetHigh (bool a_high)
void SetPoly (int a_poly)
void SetMapValid (bool a_valid)
bool GetMapValid (void)
void SetArea (double a_area)
virtual void GrazeVegetation (double, bool)
virtual void GrazeVegetationTotal (double)
int GetSoilType ()
int GetSoilTypeR ()
void SetSoilType (int a_st)
void SetLastSownVeg (TTypesOfVegetation a_tov)
 Records the last vegetation type to be sown. More...
TTypesOfVegetation GetLastSownVeg ()
 Returns the last vegetation type to be sown. More...
void SetLastTreatment (int a_treatment)
void SetSprayedToday (bool a_didit)
bool GetSprayedToday ()
void SetCopyTreatment (int a_treatment)
void SetOldDays (long a_days)
void SetRotIndex (int a_index)
int GetRotIndex (void)
void SetTramlinesDecay (int a_decaytime_days)
void SetHerbicideDelay (int a_decaytime_days)
void SetMownDecay (int a_decaytime_days)
void AddArea (double a_area_diff)
LEGetBorder (void)
int GetUnsprayedMarginPolyRef (void)
void SetBorder (LE *a_border)
void SetUnsprayedMarginPolyRef (int a_unsprayedmargin)
void SetPesticideCell (int a_cell)
int GetPesticideCell ()
void SetValidXY (int a_valid_x, int a_valid_y)
int GetValidX (void)
int GetValidY (void)
int GetMaxX (void)
int GetMaxY (void)
int GetMinX (void)
int GetMinY (void)
void SetMaxX (int x)
void SetMaxY (int y)
void SetMinX (int x)
void SetMinY (int y)
int GetMDates (int a, int b)
void SetMDates (int a, int b, int c)
int GetMConstants (int a)
void SetMConstants (int a, int c)
double GetVegDDegs ()
 Get the total of day degrees for the crop/veg on this element. More...
int GetOpenness (void)
 For goose model functionality, openness score for the polygon. More...
void SetGooseNos (int a_number, int a_day)
void SetGooseSpNos (int a_number, int a_day, GooseSpecies a_goose)
void SetGooseNosTimed (int a_number, int a_day)
void SetGooseSpNosTimed (int a_number, int a_day, GooseSpecies a_goose)
void SetGooseRoostDist (int a_dist, GooseSpecies a_goose)
int GetGooseNosToday ()
 For goose model functionality, returns the number of geese today. More...
int GetGooseNosTodayTimed ()
 For goose model functionality, returns the number of geese today at a predefined time. More...
int GetGooseNos ()
 For goose model functionality, returns the number of geese yesterday. More...
int GetQuarryNos ()
 For goose model functionality, returns the number of geese yesterday which can be hunted as legal quarry. More...
int GetGooseSpNosToday (GooseSpecies a_goose)
 For goose model functionality, returns the number of geese per species yesterday. More...
int GetGooseSpNosTodayTimed (GooseSpecies a_goose)
 For goose model functionality, returns the number of geese per species yesterday at a predefined time. More...
int GetGooseRoostDist (GooseSpecies a_goose)
 For goose model functionality, returns the distance to closest roost. More...
void SetOpenness (int a_openness)
 Records the openness statistic for this polygon. More...
virtual void ResetDigestability ()
 sets growth record to zero in descendent classes More...
void DoCopy (const LE *a_Le)
 a copy function to be used because a copy constuctor won't work More...
void SetStubble (bool a_flag)
 Sets the in stubble flag. More...
bool GetStubble ()
 Return the in stubble flag. More...
bool GetOsmiaNest ()
 Test to see if a nest is found. More...
void ReleaseOsmiaNest ()
 Test to see if a nest is found. More...
void UpdateOsmiaNesting ()
 Recalculate the nest finding probability. More...
void IncOsmiaNesting ()
 Add an occupied nest. More...
void SetMaxOsmiaNests (double a_noNests)
 Add an occupied nest. More...
void SetPollenNectarData (int a_almasstype)
 sets the pollen and nectar information More...
virtual PollenNectarQuality GetPollen ()
virtual PollenNectarQuality GetNectar ()
virtual double GetTotalPollen ()
virtual double GetTotalNectar ()
void SetPollenNectarCurves (PollenNectarDevelopmentCurve *a_pollencurnve, PollenNectarDevelopmentCurve *a_nectarcurve)
 Set method for pollen and nectar curves. More...

Protected Attributes

double m_LarvalFood
 The amount of larval food present
double m_LarvalFoodScaler
 The proportion of larval food per m2
double m_pondpesticide
 Holds the pesticide content per unit pond water. More...
bool m_MaleNewtPresent
 Flag for presence of a male newt. More...
double m_pondquality
 a factor used to alter the pond qualities (default behaviour is random 0.0-1.0) More...
- Protected Attributes inherited from LE
int m_ptrace [256]
int m_pdates [256]
int m_pindex
long m_running
int m_unsprayedmarginpolyref
int m_valid_x
int m_valid_y
int m_centroidx
int m_centroidy
int m_vege_danger_store
int m_PesticideGridCell
bool m_is_in_map
int m_subtype
int m_maxx
int m_minx
int m_maxy
int m_miny
long m_olddays
long m_management_loop_detect_date
long m_management_loop_detect_count
int m_countrydesignation
int m_owner_file
int m_owner_index
int m_rot_index
bool m_sprayedtoday
 flag to indicate an overspray situation More...
int m_poly
 The polyref number for this polygon. More...
int m_map_index
int m_almass_le_type
 This holds the ALMaSS element type reference number. More...
int m_farmfunc_tried_to_do
int m_tramlinesdecay
int m_mowndecay
int m_herbicidedelay
TTypesOfLandscapeElement m_type
double m_area
 The element area in m2. More...
int m_gooseNos [366]
 The number of geese each day. More...
int m_gooseSpNos [366][gs_foobar]
 The number of geese of each species each day. More...
int m_gooseNosTimed [366]
 The number of geese at a predefined time per day. More...
int m_gooseSpNosTimed [366][gs_foobar]
 The number of geese of each species at a predefined time per day. More...
bool m_instubble
 A flag describing the state of the field from a visual perspective - will be in stubble following a cereal crop until either soil cultivation or March 1st. More...
double m_birdseedforage
 The grain forage present in KJ/m2. More...
double m_birdmaizeforage
 The maize forage present in KJ/m2. More...
double m_goosegrazingforage [gs_foobar]
 The grazing forage present in KJ/min. The last value indicates cereal 1 or not -1. More...
TTypesOfVegetation m_lastsownvegtype
 Records the last vegegetation type that was sown on the element. More...
int m_openness
 The openness metric for a field (if any) More...
double m_dist_to_closest_roost [gs_foobar]
 An array holding the distance to the nearest goose roost. More...
int m_vegage
int m_soiltype
int m_days_since_insecticide_spray
bool m_high
bool m_poison
int m_cattle_grazing
int m_default_grazing_level
bool m_pig_grazing
double m_vegddegs
double m_yddegs
double m_ddegs
vector< int > m_lasttreat
unsigned int m_lastindex
int MDates [2][25]
int MConsts [10]
LE_Signal m_signal_mask
double m_OsmiaNestProb
 to record the chance of osmia nesting More...
int m_maxOsmiaNests
 to record the number of possible osmia nests More...
int m_currentOsmiaNests
 to record the number of actual osmia nests More...
PollenNectarQuality m_pollenquality
PollenNectarQuality m_nectarquality
double m_totalPollen
double m_totalNectar
double m_PollenM2
double m_NectarM2
 pointer to the correct pollen curve set More...
 pointer to the correct nectar curve set More...

Additional Inherited Members

- Public Attributes inherited from LE
int m_tried_to_do
int m_squares_in_map
bool m_skylarkscrapes
 For management testing of skylark scrapes. More...
long m_user [EL_MAX_USERSPACE]
 ‍** More...
bool m_repeat_start
- Static Protected Attributes inherited from LE
static double m_monthly_traffic []
 Used for birds that feed on grain on cereal fields 3% spill is expected. More...
static double m_largeroad_load []
static double m_smallroad_load []

Detailed Description

Ponds are defined as freshwater bodies between 25m2 and 5000m2. For newts the effective size is limited to 400m2.

Currently the only pond 'behviour' is related to provision of food for newt larvae. This is determined daily and can be seasonally adjusted.

Constructor & Destructor Documentation

◆ Pond()

Pond::Pond ( void  )
2776  : Freshwater() {
2777  m_type = tole_Pond;
2778  m_LarvalFood = 0.01;
2779  m_MaleNewtPresent = false;
2781 }
bool value(void)
Definition: configurator.h:135
Definition: elements.cpp:2766
TTypesOfLandscapeElement m_type
Definition: elements.h:487
double m_LarvalFood
The amount of larval food present
Definition: elements.h:1186
double m_pondquality
a factor used to alter the pond qualities (default behaviour is random 0.0-1.0)
Definition: elements.h:1194
bool m_MaleNewtPresent
Flag for presence of a male newt.
Definition: elements.h:1192
boost::variate_generator< base_generator_type &, boost::uniform_real<> > g_rand_uni
CfgBool cfg_randompondquality("POND_RANDOMQUALITY", CFG_CUSTOM, false)
Controls whether random pond quality is used.
@ tole_Pond
Definition: tole_declaration.h:101

References cfg_randompondquality, g_rand_uni, m_LarvalFood, m_MaleNewtPresent, m_pondquality, LE::m_type, tole_Pond, and CfgBool::value().

Member Function Documentation

◆ CalcLarvalFood()

void Pond::CalcLarvalFood ( )

Calculates the amount of larval food present

The larval food is calculated assuming a logistic equation in the form of Nt+1 = Nt+(N*r * (1-N/K)) t = one day, N is a scaler which is multiplied by a constant and the area of the pond to get the total larval food, K & r are carrying capacity and instantaneous reproductive rate respectively. K can change with season and this is currently hard coded, but could be an input variable later. The values are held in LarvalFoodMonthlyK
The steps in the calculation are:

  • Enforce a assumed pond size for newts as maximum 400 m2
  • Ensure we never get zero larval food, so there is always something to grow the curve from.
  • Back calculate the current scaler value. This is needed because between time steps, food may be eaten by larvae. This is done based on the area and a fixed constant held in cfg_PondLarvalFoodBiomassConst
  • Calculate the new scaler based on the logistic equation as described above
  • Re-calculate the new total food biomass based on the area and a fixed constant held in cfg_PondLarvalFoodBiomassConst
2823 {
2836  double area = m_area;
2837  if (m_area > 400) area = 400;
2838  const double LarvalFoodMonthlyK[12] = { 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0 };
2839  // Back calculate the scaler
2841  // Calculate the new scaler
2843  // Provide some contest competition by preventing all the food from being used up, leaving minimum 1%
2844  if (m_LarvalFoodScaler < 0.01) m_LarvalFoodScaler = 0.01;
2845  // Calculate the new food biomass
2847 }
class Calendar * g_date
Definition: calendar.cpp:38
int GetMonth(void)
Definition: calendar.h:69
double value(void)
Definition: configurator.h:118
double m_area
The element area in m2.
Definition: elements.h:489
double m_LarvalFoodScaler
The proportion of larval food per m2
Definition: elements.h:1188
CfgFloat cfg_PondLarvalFoodBiomassConst("POND_LARVALFOODBIOMASSCONST", CFG_CUSTOM, 215.0)
A constant relating the proportion of food units per m2. The value is calibrated to estimates of newt...
CfgFloat cfg_PondLarvalFoodR("POND_LARVALFOODFOODR", CFG_CUSTOM, 0.15)
The instanteous rate of growth for larval food (r from logistic equation)

References cfg_PondLarvalFoodBiomassConst, cfg_PondLarvalFoodR, g_date, Calendar::GetMonth(), LE::m_area, m_LarvalFood, m_LarvalFoodScaler, m_pondquality, and CfgFloat::value().

Referenced by DoDevelopment().

◆ CalcPondPesticide()

void Pond::CalcPondPesticide ( )

Calculates the amount of pesticide per unit pond water

The pesticide is calculated based on the mean concentration per m2 which is then multiplied by a factor representing run-off from the surroundings or other movements of pesticides through soil into the pond. This method assumes a uniform depth of water, which is then ignored (so can be seen as being part of the run-off factor). The pesticide concentration is calculated each day. These calculations are heavy on CPU time because of the need to search the landscape map for pond 1m2 and sum pesticide. So this has to be set to run by flagging using cfg_calc_pond_pesticide

To create the sum of pesticide the map is searched from min x,y to max x,y coords, and pond cells are summed for their pesticide content. Then the mean found.

We assume a mean pond depth of 1 m, so pesticide per l = m_pondpesticide/1000 to get per litre then multiplied buy the run-off factor

2792 {
2801  m_pondpesticide = 0.0;
2803  {
2804  return;
2805  }
2810  for (int x = m_minx; x <= m_maxx; x++)
2811  for (int y = m_miny; y <= m_maxy; y++)
2812  {
2814  }
2820 }
int m_maxx
Definition: elements.h:462
int m_minx
Definition: elements.h:463
int m_miny
Definition: elements.h:465
int m_poly
The polyref number for this polygon.
Definition: elements.h:477
int m_maxy
Definition: elements.h:464
double SupplyPesticide(int a_x, int a_y, PlantProtectionProducts a_ppp)
Gets total pesticide for a location.
Definition: Landscape.cpp:586
int SupplyPolyRef(int a_x, int a_y)
Definition: landscape.h:1488
double m_pondpesticide
Holds the pesticide content per unit pond water.
Definition: elements.h:1190
CfgFloat cfg_pondpesticiderunoff("POND_PEST_RUNOFFFACTOR", CFG_CUSTOM, 10.0)
The multiplication factor assumed to account for ingress of pesticide from run-off and soil water to ...
CfgBool cfg_calc_pond_pesticide("POND_PEST_CALC_ON", CFG_CUSTOM, false)
Flag to determine whether to calculate pond pesticide concentration.
class Landscape * g_landscape_p
Definition: Landscape.cpp:258
@ ppp_1
Definition: farm.h:422

References cfg_calc_pond_pesticide, cfg_pondpesticiderunoff, g_landscape_p, LE::m_area, LE::m_maxx, LE::m_maxy, LE::m_minx, LE::m_miny, LE::m_poly, m_pondpesticide, ppp_1, Landscape::SupplyPesticide(), Landscape::SupplyPolyRef(), CfgFloat::value(), and CfgBool::value().

Referenced by DoDevelopment().

◆ DoDevelopment()

void Pond::DoDevelopment ( void  )

DoDevelopment is needed due to special development for this element type, i.e. larval food calculations for newts.

Reimplemented from LE.

2784 {
2787  CalcLarvalFood();
2788  m_MaleNewtPresent = false;
2789 }
virtual void DoDevelopment(void)
Definition: elements.cpp:531
void CalcPondPesticide()
Calculates the amount of pesticide per unit pond water
Definition: elements.cpp:2791
void CalcLarvalFood()
Calculates the amount of larval food present
Definition: elements.cpp:2822

References CalcLarvalFood(), CalcPondPesticide(), LE::DoDevelopment(), and m_MaleNewtPresent.

◆ IsMaleNewtPresent()

bool Pond::IsMaleNewtPresent ( )

Gets whether there is a male newt as present.

Reimplemented from LE.

1212 { return m_MaleNewtPresent; };

References m_MaleNewtPresent.

◆ SetMaleNewtPresent()

virtual void Pond::SetMaleNewtPresent ( bool  a_ispresent)

Sets a male as present/absent.

Reimplemented from LE.

1210 { m_MaleNewtPresent = a_ispresent; };

References m_MaleNewtPresent.

◆ SubtractLarvalFood()

bool Pond::SubtractLarvalFood ( double  a_food)

Called by a larva when feeding, removes an age specific amount of larval food

If the total amount of food is low then there is a probability test to determine if food can be found. If failed the return code false means no food was removed. If passed then this removes the amount of food passed in a_food and return true.

2850 {
2855  m_LarvalFood -= a_food;
2856  if (m_LarvalFood < 0) return false;
2857  return true;
2858 }

References m_LarvalFood.

◆ SupplyPondPesticide()

double Pond::SupplyPondPesticide ( )

supply the current pesticide concentration per litre

1208 { return m_pondpesticide; }

References m_pondpesticide.

Member Data Documentation

◆ m_LarvalFood

double Pond::m_LarvalFood

The amount of larval food present

Referenced by CalcLarvalFood(), Pond(), and SubtractLarvalFood().

◆ m_LarvalFoodScaler

double Pond::m_LarvalFoodScaler

The proportion of larval food per m2

Referenced by CalcLarvalFood().

◆ m_MaleNewtPresent

bool Pond::m_MaleNewtPresent

Flag for presence of a male newt.

Referenced by DoDevelopment(), IsMaleNewtPresent(), Pond(), and SetMaleNewtPresent().

◆ m_pondpesticide

double Pond::m_pondpesticide

Holds the pesticide content per unit pond water.

Referenced by CalcPondPesticide(), and SupplyPondPesticide().

◆ m_pondquality

double Pond::m_pondquality

a factor used to alter the pond qualities (default behaviour is random 0.0-1.0)

Referenced by CalcLarvalFood(), and Pond().

The documentation for this class was generated from the following files: